Tutor MathsGuru: Ask me for your burning Maths questions!

[CJM]

At a party, 3/7 of the people attending were adults. 2/5 of the children were boys. If there were 48 girls,


a) how many children were there ?
b) how many people were ast the party ?

[Dharma]

Herbie:

Hi dharma, i hv one qn,

16 girls and some boys raised a total of $2600 for their sch pocket money fund. Each boy raised $40 more than each girl. If there were 2 more girls than boys, how much more money did the boys raise than the girls?

$ related qn is a problemarea for my Ds. Do u hv any advise on how to conquer $ n quantity qn? Many tx

No of girls = 16
No if boys = 16 - 2 = 14
16(1u) + 14(1u + $40) = $2600
30u = $2600 - $560
30u = $2040
1u = $68


Diff = 14($108) - 16($68 ) = $424

# Total cost = Qty x Unit Cost

[beauty queen]

One more question mathgurus


i think an easy one?

Samad and Toby walked from Town A to Town B at the same time. Samad was faster than Toby by 4km/h. When Samad reached Town B in 4 hours, he immediately walked back to Town A. On the way back he met toby who was 10 km away from Town B. What was Samad’s speed

[biniv300]

atutor2001:

biniv300:

DEAR MATHS GURU,

i need help in this questions (hints are given)



1) mrs thiken is planning or a meeting.She wants to use 36 small square tablesto make 1 large table.she needs 1 chair for the sides of each small table.how hany chairs are needed for the large table?? solve a slimpler problem :?: :?: :?:

2)arrange 7 dots in such a way that you can draw straight lines through 6 sets of 3 dots. draw a picture :?: :?: :clubmyself: :udaman: :snooze:

Q1 cannot be solved unless it is stated that the large table must also form a square. If that is the case, it will be formed by 6 x 6 small tables. Number of chairs needed will be 6 x 4 = 24.

Q2 is to put 1 dot at reach corner of a hexagon (6-sided polygon) with 1 dot in the centre.

hi my friends say the ans is 24 is it true??? (question1):? :?

[biniv300]

CJM:

At a party, 3/7 of the people attending were adults. 2/5 of the children were boys. If there were 48 girls,


a) how many children were there ?
b) how many people were ast the party ?

ans
(a)64
(b)112

[Vanilla Cake]

beauty queen:

One more question mathgurus

I am a Sec 2 student and not a mathsguru.

beauty queen:

Samad and Toby walked from Town A to Town B at the same time. Samad was faster than Toby by 4km/h. When Samad reached Town B in 4 hours, he immediately walked back to Town A. On the way back he met toby who was 10 km away from Town B. What was Samad's speed

Assume Toby's speed be n km/h
Difference in speed = 4 km/h
Distance apart = 4x4=16 km
16km-10km=6km
6/n=10/(n+4)
10n=6n+24
4n=24
n=6 km/h
6km/h+4km/h = 10 km/h

Samad's speed = 10 km/h.

PS : Pls advise the source of this question? Is it from your child's school homework?

[Hifive]

Hi everyone


Need help with this question:
Source : Catholic High Sch P5 SA2 2009

http://postimage.org/image/2pa7ck5xg/

Thanks in advance.

[kancheongmum]

Hifive:

Hi everyone


Need help with this question:
Source : Catholic High Sch P5 SA2 2009

http://postimage.org/image/2pa7ck5xg/

Thanks in advance.

Hi Hifive

area of triangles whose bases are on the length of rectangle:

1/2 x 6 x 12 = 36 m2

area of triangles whose bases are on the breath of rectangle:

1/2 x 2 x 24 = 24 m2

total shaded area 36 + 24 = 60 m2

[Dharma]

CJM:

At a party, 3/7 of the people attending were adults. 2/5 of the children were boys. If there were 48 girls,


a) how many children were there ?
b) how many people were ast the party ?

Adults => 3/7
Children => 4/7
Boys => 2/5 x 4/7 = 8/35
Girls =>3/5 x 4/7 = 12/35

12u = 48
1u = 4

Number of children = 20u = 20 x 4 = 80

Number of people = 35u = 35 x 4 = 140

[Dharma]

CJM:

A kettle has 420ml more water than a jug. When 150ml of water is poured from the jug into the kettle, thre are 4 times as much water in the kettle as the jug. How much water is there in the jug now ?

1u – 1p = 420 ------------- ( 1 )

Jug : 1p – 150
Kettle = 1u + 150

4p – 600 = 1u + 150
4p – 1u = 750 ------------ ( 2 )
( 1 ) + ( 2 )

3p = 1170
1p = 390
Amount of water in jug now = 1p – 150 = 390 – 150 = 240

Amount of water in jug now is 240 ml