Tutor MathsGuru: Ask me for your burning Maths questions!

[ChiefKiasu]

Nothing beats being recommended for an award by a fellow member :).


mathsguru is hereby awarded the Community Support Award of 500 KPs :).

[KingRascal]

Hi Mathsguru


This is really an eye-opener. May I know what level of math are these questions meant for? In order to coach and guide my DS in future, I had better make sure my foundation on model drawing is built well right now!

Btw, I am not sure if anyone has asked you before. What is your opinion of Myhometutor's CD rom as a tool for self-learning at home? Are their teachings reliable? Thanks!

mathsguru:

Dear all,

I've received a query for the following % questions from Kitty2. Can take a look and see if your children can figure these out...

1. Benny had 20% more marbles than Hong Joo. After Hong Joo had received 80 marbles from Benny, Hong Joo had 20% more marbles than Benny. How many marbles did the 2 boys have altogether?

2. A certain number of stamps was shared between Tony and Jennifer. Tony's share was 600 stamps. If Tony's share was increased to 680 stamps, Jennifer's share would be decreased by 8%. Find Jennifer's share.

3. 25% of the boys and 12% of the girls made up 139 children. There were 660 children altogether. How many boys and how many girls \twere there?

4. Janet had 60% more money than Andy. Helen had half of what Janet had. When Andy gave $240 to Helen, both of them had the same amt of money.\t
a) How much money did Helen have at first?\t
b) If Janet gave 20% of her money to charity, how much money had she left?

Solutions are also attached here...but pls, no checking of answer key before trying ah~~ :politebleah:

http://www.postimage.org/image.php?v=aV1NM1z9

http://www.postimage.org/image.php?v=aV1NM43i

http://www.postimage.org/image.php?v=aV1NM6yr

http://www.postimage.org/image.php?v=aV1NM92A

Have fun,
MathsGuru

[Dharma]

Hi Mathsguru,


The kids who will be doing PSLE in 2010 and their parents are very fortunate to have you around. Your solutions and crystal clear explanations will surely be a great help to all of us. :celebrate:

Thanks for your active participation.
:thankyou:

[KSP]

:congrats: Mathsguru, you deserve this award. :celebrate: :rahrah:

ChiefKiasu:

Nothing beats being recommended for an award by a fellow member :).

mathsguru is hereby awarded the Community Support Award of 500 KPs :).

[Muffins]

ChiefKiasu:

Nothing beats being recommended for an award by a fellow member :).


mathsguru is hereby awarded the Community Support Award of 500 KPs :).

You deserve it, Mathsguru! Your guidance and help have shown us new ways of solving seemingly tough problems. CONGRATULATIONS, MATHSGURU, AND THANK YOU! :congrats: :thankyou:

[kitty2]

ChiefKiasu:

Nothing beats being recommended for an award by a fellow member :).


mathsguru is hereby awarded the Community Support Award of 500 KPs :).

Well Done :congrats: You're indeed extremely helpful and kind :thankyou:

[kitty2]

mathsguru,please :?: Thank you



1)During a telematch,each group was supposed to collect as many coloured balls as possible.Each colour represents a certain point as followed

red 2 points
green 5 points
blue 3 points

Within each container,the number of red balls was 20% more than the number of blue balls and 10% lesser than the number of green balls.Given that the total possible points if the group managed to collect all the balls was 724 points,how many red balls were there?

2) Jason had 75% as many stickers as Susan.After Jason and Susan bought another 48 stickers and 4 stickers respectively,Jason had 20% more stickers than Susan.How many stickers did Jason have at first?

3)Amos had 20% more sweets than Daniel.Amos started by giving 30% of his sweets to Daniel.Daniel in return gave 25% of his sweets to Amos.In the end.Daniel had 32 lesser sweets than Amos.How many sweets did Amos have at first?

[Muffins]

kitty2:

mathsguru,please :?: Thank you



1)During a telematch,each group was supposed to collect as many coloured balls as possible.Each colour represents a certain point as followed.

green 5 points
red 2 points
blue 3 points

Within each container,the number of red balls was 20% more than the number of blue balls and 10% lesser than the number of green balls.Given that the total possible points if the group managed to collect all the balls was 724 points,how many red balls were there?

2) Jason had 75% as many stickers as Susan.After Jason and Susan bought another 48 stickers and 4 stickers respectively,Jason had 20% more stickers than Susan.How many stickers did Jason have at first?

3)Amos had 20% more sweets than Daniel.Amos started by giving 30% of his sweets to Daniel.Daniel in return gave 25% of his sweets to Amos.In the end.Daniel had 32 lesser sweets than Amos.How many sweets did Amos have at first?

Hi kitty2, hope I can help though I'm not mathsguru!

Q1) Change everything to LCM, so:
G = 20 units
R = 18 units
B = 15 units

20u X 5 =100u
18u X 2 =36u
15u X 3 = 45u
(100+36+45)u = 181u
181u = 724
1u = 4
Red = 18u
4X 18 = 72

Q2) S : J
4u : 3u
(+4) (+48 )
5u : 6u
5 X (3u + 4) = 15u + 240
6 X (4u + 48 ) = 24u + 24
(24u + 24) - (15u + 240)
15u + 240 = 24u + 24
= 240 = 9u + 24
240 - 24 = 216
216 = 9u
216/9 = 24
24 = 1u
24 X 3 = 72

Q3) D : A
50u : 60u
60u X 30% = 18u
60u - 18u = 42u
50u + 18u = 68u
68u X 25% = 17u
68u - 17u = 51u
42u + 17u = 59u
59u - 51u = 8u
8u = 32
32/8 = 4
4 X 60 = 240

Hope I helped!

[kitty2]

:thankyou: Muffin

[Muffins]

kitty2:

:thankyou: Muffin

No problem, kitty2!