Question

Mohan's income is Rs 15500 per month. He saves 11% of his income. If his income increases by 10%, then he reduces his saving by 1%, how much does he save now?

Answer 1

Mohan's saving = 11 % of 15500
$$=\frac{11}{100}\times 15500$$
 = Rs . 1705
It is given that Mohan's income increases by 10 %. 
$$\therefore \text{ Increase in income }=\frac{10}{100}\times 15500=Rs1550$$
Increased income = Rs (15500 + 1550) = Rs 17050
Now, percentage of saving = (11 - 1) = 10 % 
$$\therefore \text{ Saving }=\frac{10}{100}\times 17050=Rs1705$$
Thus, the amounts of his present and earlier savings are the same.