Question

The ratio of income of a person to his savings is 10 : 1. If his savings of one year are Rs 6000, what is his income per month?

Answer 1

Savings in one year = Rs. 6000
So, savings per month = $\frac{6000}{12}=\text{Rs.}500$.
Let the income per month be Rs 'x'.
Then, x : 500 = 10 : 1.
So, x, 500, 10 and 1 are in proportion.
Product of extremes = Product of means
$x\times 1=10\times 500$
$x=\frac{10\times 500}{1}$ = Rs. 5000