Tutor MathsGuru: Ask me for your burning Maths questions!
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Muffins:
Thankyou muffins.But still hv a doubt. Y cant it be 9 all the 4 times = 36.
Just double both the amounts of the highest numbers e.g. 9 and 6.Almighty:
These are from Andrew Er's Mathematics worksheets P6 book edition 2009:Kindly assist in these problems:
1)Has drawing-Very sorry i am not able to upload the picture:
Booklet 5 : Difficulty level 1:Qt:4:Page: 35
There are 3 dart circles.Value 9 is in the inner circle, 6 in the middle circle and 2 in the outermost circle. Eddie was given 5 darts to throw at the target. One if the darts missed the target completely. What was the highest possible even score that he could get?Ans 30.
Y sh v take 2 times hitting at 9 and 2 times hitting at 6.Can u explain? -
Thanks to Maths Monster!
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Hi , can anyone help me with this school exam paper ?
Q4) ABCD is a rectangle. The area of triangle ABE is 80cm2. The area of triangle CDE is 30% of the area of rectangle ABCD.
Find the area of rectangle ABCD.
(I don’t have the graphics - please help if you know what I am talking about, thanks)
Given answer is 400cm2
Q13) It takes Mrs Lim 7 hours to sew a dress by herself. If Mrs Tan helps her, they will take 3 hours to sew the dress. How long will Mrs Tan take to sew the dress by herself?
Given answer is 5.25 hours
Q16) At 8am, Richard left Town A in his car and travelled towards Town B at 90km/h. At the same time, Kenny left Town A in his car and travelled in the opposite direction towards town C. When Kenny reached Town C at 10.30am, Richard was 15 km away from Town B.
a) What was the distance from Town A to Town B?
b) If the distance between Town B and C was 440km, what was Kenny’s average speed?
Given answers
a) 240km
b)80km/hour
Q18) Aisha, Bala, Cindy and Dannyt went to buy a gift for Miss Emily. They shared the cost equally among themselves. However, Danny forgot to bring his money. So his friends paid for the gift first.
Cindy paid 3/5 of the amount Aisha and Bala paid.
Bala paid $10 more than Aisha.
The next day, Danny returned $24 to Cindy and some money to Aisha and Bala.
How much did Danny return to
a) Aisha?
b) Bala?
Given answers: $7 to Aisha
$17 to Bala -
Hi VC,
Thank you so much!! -
Almighty:
HI Ksi,
one way is to draw on the power point, then upload to a host like http://www.photobucket.com or picasa or flickr, then link the image here.ksi:
[quote=\"Almighty\"]Hi,
I dont know how to attach / draw a pic here. Anyone can help ? Meanwhile i'll type in the best way to represent the pattern. Pl.help me to solve this problem.
4 6 35 7 41 6
140 241 ?
BElow 4 and 6 is 140, below 35 and 7 is 241, below 41 and 6 is ?
Thankyou[/img]
Cannot still do it.Can u elaborate on how 2 do. I can only upload photos not drawings.It is asking for image file type. How sh i save the powerpoint file? Any help on this?[/quote]You must save the ppt as .jpg file, then size it down using paint and upload to the image hosting site. -
Hi everyone
Need help with this question - P5 level:
The ratio of $5-notes to 20-cent coins in Mr Tan’s counter was 19:5. Mr Tan exchanged 15 of his $5-notes for some 20-cent coins. The ratio of the $5-notes to 20-cent coins then became 1:5. What was the total value of $5-notes and 20-cent coins at first?
Thank you in advance. -
Almighty:
Almighty, you know how to upload photo?These are from Andrew Er's Mathematics worksheets P6 book edition 2009:Kindly assist in these problems:
1)Has drawing-Very sorry i am not able to upload the picture:
Booklet 5 : Difficulty level 1:Qt:4:Page: 35
There are 3 dart circles.Value 9 is in the inner circle, 6 in the middle circle and 2 in the outermost circle. Eddie was given 5 darts to throw at the target. One if the darts missed the target completely. What was the highest possible even score that he could get?Ans 30.
2) Booklet 5 : Difficulty level 3:Qt: 10:Page: 21
If Lucy give $8 to Ali, he will have 5 times as much money as Lucy. If Ali gives $12 to Lucy, She will have 1/3 of the amount Ali has. How much does Ali have at first? ANs:192/- I am unable to understand the model concept used by the answer key. Kindly explain in detail.
3)Cubes question-Has drawing-Very sorry i am not able to upload the picture
Booklet 6 : Diagnostic test: qt:17:Page: 26
4)CA 2 : Section A Qt :8: Page : 21: PAttern question
5)Has drawing:Booklet 8 : Difficulty level 3: Qt : 3 : Page:18: Area n perimeter question.
6) During a sale, the price of a skirt was reduced from $256.80 to $214 inclusive of GST of 7%. What was the decrease in price of the skirt, excluding GST? Ans:40.
7) PSLE PRELIMINARY EXAMINATION 2 :PAPER 2 :qT :5:pattern qt: Ans:8
My apologies for long question request...Please help with explanations... :?:
maybe you can use the camera to snap a shot and then upload the jpg file onto hosting site, this can do too......then using the tagsto post it here.
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abc_parent:
Area of ΔABE+Area of ΔCDE=Area of ΔAED+Area ofΔEBCQ4) ABCD is a rectangle. The area of triangle ABE is 80cm2. The area of triangle CDE is 30% of the area of rectangle ABCD.
Find the area of rectangle ABCD.
Since ΔABE&ΔCDE have common base and ΔAED&ΔEBC have common base.
Area of ΔABE+Area of ΔCDE=50% of Area of rectangle ABCD
Since Area of ΔCDE = 30% of Area of rectangle ABCD,
Area of ΔABE = 50%-30%=20%
20%=80 cm² (Given that Area of ΔABE=80 cm²)
100% = 80 cm² x5 = 400 cm²
Area of rectangle ABCD = 400 cm²
Note: Pls wait for other members to upload the diagram of the question as it is not easy to work without the diagram.abc_parent:
Mrs LimQ13) It takes Mrs Lim 7 hours to sew a dress by herself. If Mrs Tan helps her, they will take 3 hours to sew the dress. How long will Mrs Tan take to sew the dress by herself?
7 hours -> 1 dress
3 hours -> 1/7x3 = 3/7 dress
Mrs Tan
3 hours -> 1-3/7 = 4/7 dress
1 dress -> 3x7/4 = 21/4 = 5.25 hours
For Mrs Tan to sew 1 dress by herself, she will need 5.25 hoursabc_parent:
From 8 a.m. to 10.30 a.m., time lapsed = 2½ hoursQ16) At 8am, Richard left Town A in his car and travelled towards Town B at 90km/h. At the same time, Kenny left Town A in his car and travelled in the opposite direction towards town C. When Kenny reached Town C at 10.30am, Richard was 15 km away from Town B.
a) What was the distance from Town A to Town B?
b) If the distance between Town B and C was 440km, what was Kenny's average speed?
(90 km/hx2½h)+15km = 240 km
(a) Distance from Town A to Town B = 240 km
Distance from A to C =(440-240)km = 200 km
since it was given that distance between Town B and Town C = 440 km
Average speed of Kenny = 200 km÷2½h = 80 km/habc_parent:
C : A+BQ18) Aisha, Bala, Cindy and Dannyt went to buy a gift for Miss Emily. They shared the cost equally among themselves. However, Danny forgot to bring his money. So his friends paid for the gift first.
Cindy paid 3/5 of the amount Aisha and Bala paid.
Bala paid $10 more than Aisha.
The next day, Danny returned $24 to Cindy and some money to Aisha and Bala.
How much did Danny return to
a) Aisha?
b) Bala?
3 : 5
Total price for the gift = (3+5)u = 8u as Danny had forgotten to bring his money.
A : B : C : D
2 : 2 : 2 : 2
A+B= (2+2)u = 4u
Danny returned $24 to Cindy
(3-2)u= u = $24
Bala paid $10 more than Aisha
(5-4)u= u
Amount of money that Aisha paid for Danny = $(24-10)÷2=$7
(a) Amount of money returned by Danny to Aisha = $7
$(10+7)=$17
(b) Amount of money returned by Danny to Bala = $17 -
Hifive:
The ratio of $5-notes to 20-cent coins in Mr Tan's counter was 19:5. Mr Tan exchanged 15 of his $5-notes for some 20-cent coins. The ratio of the $5-notes to 20-cent coins then became 1:5. What was the total value of $5-notes and 20-cent coins at first?
Hi Hifive,
This method is from http://www.onsponge.com/forum/35-thinkingmathonsponge.html, not sure whether it is suitable or not.Pls wait for other members to post model solution.
Exchanged 15 of his $5-notes for some 20-cent coins, number of 20-cent coins = (15x5) divided by 0.20 = 375 each of 20-cent coins.
$5 : 20¢
19u : 5u
-15 : 375
1p : 5p
$5 : 20¢
95u : 5u
-75 : 375
5p : 5p
95u-75=5u+375
90u=450
u = 5
At first
Number of $5 notes = 19u = 19x5 = 95
Number of 20-cent coins = 5u = 5x5 = 25
At first
Value of 95 each of $5 notes = 95x$5 = $475
Value of 20-cent coins = 25x$0.20 = $5
Total value of $5-notes and 20-cent coins at first = $(475+5) = $480 -
ksi:
SSS...I'll try to do this..Thanku so much Ksi..
Almighty, you know how to upload photo?
maybe you can use the camera to snap a shot and then upload the jpg file onto hosting site, this can do too......then using the tags
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