Question

the salaries of two persons are in the ratio 4:7. both spend 80%of their salaries and save the rest. the ratio of their savings is

Answer 1

if 80 percent was spend then 20 percent was remaining

so 20 percent is the savings

20 percent means 20/100

Given ratio 4:7

consider it as 4x and 7x

ratio of savings is 4x of 20 percent and 7x of 20 percent

4x×20/100. : 7x×20/100

4x × 1/5. :. 7x × 1/5

1/5 and 1/5 cancelled because in division

4x/7x

x,x gets cancelled ...

Hence the ratio is 4:7