Q&A - P5 Math

[BigDevil]

Please can someone please help with this question please..Thanks so much in advance.

http://i58.tinypic.com/2dtdj4j.jpg

Area of big rectangle - area(A) - area(B) - area(C)

[BigDevil]

- please help with this question

A : B + C -> 2:3 or 12:18 (total 30u)

B : A + C -> 1:5 or 5:25 (total 30u)

A -> 12u
B -> 5u
C -> 30-12-5 = 18u

[Sruthi]

Sorry i dont understand how we got 30u ?

[Sruthi]

G.swimmers + G.non-swimmers = 7, so total number of girls is a multiple of 7

since total number of girls : total number of boys = 6:5
we multiply by 7 to get --> 42 : 35

Sorry could not understand why we need to multiply by 7 [why we need to use G.swimmers and G.non-swimmers ]

Can't we use b.swimmers+b.non-swimmers = 5 instead ?

[svs]

Hi sruthi,

Girls : boys
6 :5
6 unit of girls is divided into = 7 units

5 unit of boys is divided exactly into 3:2 =5 units

So using common multiple, G:B is multiplied by 7

[milo-cupcake]

Hi,
Can someone help with the following question ?



Thanks in advance!

[ILLUSDUCA]

Hi,
Can someone help with the following question ?



Thanks in advance!

Hello milo-cupcake,

B : G
1 : 10
3 : 2 (booklets each)
----------
3 : 20, total 23 booklets per 1 boy and 10 girls.

23 x $25 = $575. This means every 1 boy and 10 girls can make $575

Total earnings = $5750
$5750 / $575 = 10 groups of (1 boy and 10 girls)

So,
a) 10 boys
b) 100 girls

hope this helps!

[milo-cupcake]

Hi ILLUSDUCA,
Thanks for solving my problem.
Sorry another question needs help:

[ILLUSDUCA]

Hi ILLUSDUCA,
Thanks for solving my problem.
Sorry another question needs help:

We can see it as pears have 7u in total and apples have 5u in total
1u of pears and 1u of apples = 26
2u of pears and 2u of apples = 52
5u of pears and 5u of apples = 130 fruits
If 5u of pears and 5u of apples were gone, then only 2u of pears are left
so, 140 - 130 = 10 pears = 2u
1u = 5 pears
7u = 35 pears

hope this helps!

[speedmaths.com]

850 children took part in a contest. They were divided into two groups.
1/4 of the boys are in Group X and 1/3 of the girls are in Group Y.
There are as many boys as girls in Group Y.
How many boys and how many girls took part in the contest?

Hi,

Please check/confirm the numbers/fractions in the question.

Cheers



speedmaths
.