A man invested Rs. 10800 at the rate of 7.5% p.a. for two years on SI and Rs. ‘P’ at the rate of 20% p.a. for two years on CI. If ratio of total SI received by man to total CI received by man in second year is 9 : 10. Find ‘P’.

Correct option is D

Total SI received by man = 10800 ×$$\frac{7.5 \times 2}{100}$$​= 1620 Rs.
Total CI received by man for second year = 1620 ×$$\frac{10}{9}$$​=1800 Rs.
Total CI received by man for second year =$$20 + \frac{20 \times 20}{100}$$​ = 24%
P = 1800 ×$$\frac{100}{24}$$​=7500 Rs

Exam Hall Approach