- A15
- B10
- C20
- D25
Step-by-Step Solution
Interest of 0.6 × P in 6 years → 10% per year. To gain 1.5 × P needs 1.5/0.1 = 15 years.
Answer: A) 15
At simple interest a sum becomes 1.6 times itself in 6 years. In how many years will it become 2.5 times itself at the same rate?
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