Question

3. Siti and Mary shared $35 in the ratio 4:3.
How much money did Siti receive?

Answer 1

$20

Explanation:

First we will change the ratio so that we are finding how much money Siti receives to the total amount of money.

`4:3 \rightarrow 4:(3+4)=4:7`

Now we can solve for how much money Siti receives using a proportion.

`(4)/(7) = \frac{\mbox{money Siti receives}}{35}`

We can see that the denominator increases 5 times, so the numerator must increase 5 times too. This means Siti receives $20.