Question

The ratio of two sums of money is 5:7 if the smaller amount is $250, what is the largest amount?

Answer 1

$350

Explanation:

5 is to 250 as 7 is to 'x'

5/250 = 7/x

cross-multiply:

5x = 1750

x = 350

Answer 2

$350

Explanation:

`(250)/(y) :(5)/(7)`

y · 5 = 250 · 7

5y = 1750

5y ÷ 5 = 1750 ÷ 5

y = 350