An amount of money becomes double in 10 years. In how many years will the same amount becomes 5 times of the same rate of simple interest ?A30B40C50D60Answer: B. 40 Read Explanation: If an amount of money becomes double in 10 years rate of interest = 100/10 = 10% the same amount becomes 5 times in = 400/10 = 40 yearsRead more in App