simple interest and compound interest tricks - Interview Questions

simple interest and compound interest tricks

The simple interest earned on a certain amount is double the amount when invested for 10 years. What is the interest rate being offered ?

Answer : B. 20%

A certain sum of money amounts to Rs.1300 in 2 years and to Rs. 1525 in 3.5 years. Find the sum and the rate of interest ?

Answer : D. Rs 1000, 15%…

Vijay invested Rs.50,000 partly at 10% and partly at 15%. His total income after a year was Rs.7000. How much did he invest at the rate of 10% ?

Answer : A. 40,000…

Rs.5887 is divided between Shyam and Ram, such that Shyam’s share at the end of 9 years is equal to Ram’s share at the end of 11 years, compounded annually at the rate of 5%. Find the share of Shyam ?

Answer : C. 3087…

A sum of money place at compound interest doubles itself in 4 years. In how many years will it amount to eight times itself ?

Answer : C. 12…