A man saves a certain part of his monthly income so that he can purchase a car in 16 months. Find the percent increase in his savings so that he can purchase the same car in 14 months only.

14\(\frac{2}{7}\)%

Let the cost of car = Rs.112

Now,

To purchase the car in 16 months, savings should be = \(\frac{112}{16}\) = 7 Rs./mnt

To purchase the car in 14 months, savings should be = \(\frac{112}{14}\) = 8 Rs./mnt

Increase in savings = 8 - 7 = 1 Rs./mnt

Saving increase percentage = \(\frac{1}{7}\) × 100% = 14 \(\frac{2}{7}\)%