Question

Sudeep invested 1/8 of a certain sum at 5% per annum for two years and 3/5 of the sum of 6% per annum for two years and the remaining at 10% p.a. for two years. If the total interest received is Rs. 1,674, then the total sum invested is:

• A. Rs. 12,500
• B. Rs. 10,500
• C. Rs. 12,000
• D. Rs. 13,000

Answer 1

Answer:

C. Rs. 12,000

40x × 1/8 = 5x and 40x × 3/5 = 24x and 40x - 5x - 24x = 11x [2 × (5x × 5 + 24x × 6 + 11x × 10)]/100 = 1674 2 × 279x = 167400 558x = 167400 x = 167400/558 x = 300 Total sum = 40 × 300 = 12000