- A30
- B20
- C25
- D40
Step-by-Step Solution
Interest of 50% in 5 years means 10% per year. To become 4 times, interest must be 300%, which takes 300 ÷ 10 = 30 years.
Answer: A) 30
At simple interest, a sum becomes 1.5 times itself in 5 years. At the same rate, in how many years will it become 4 times itself?
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