avell:

Dear all


Pls help me for the following questions:-

Qn (1)
4/5 of John's money is equal to 3/8 of Sarah's money. Express Sarah's money as a ratio of John's money in it simplest form (draw a model to help you to solve the sum.

Qn (2)
The ratio of boys and girls on a school bus was 2 : 3. When 16 girls alighted from the bus, the ratio of the remaining boys to girls became 6:5. Find the number of children who remained on the bus.

Qn (1)
Make the Numerator of the fractions the same : 4/5*3=12/15
3/8*4=12/32

So the denominator is the total amount for each person.
The ratio would be
J:S
15:32
Qn(2)
Before
B:G
2:3

After
B:G
6:5

The number of boys did not change so....
Before
B:G
2:3
*6 *6
12:18

After
B:G
6:5
*2 *2
12:10

18-10=8
8u = 16
1u = 2
12+10=22
22u = 44

Number of Children remained : 44

Thank you TianZhu.

Here is another question in my child's mock paper:

Four brothers in a family share a pool of pocket money equally given by their parents every monday.One monday morning.Albert took his share from the drawer and left. Bernard not realising that Albert had taken his share,took his own share and left. Calvin also unaware that Albert and Berbard had taken their share , took his rightful share and left.David also un aware that the other three had taken their share, and he took his share and left. In the end , there was $81 left in the Drawer. How much money was there in the drawer at first?

:?