Arithmetichard · Past Paper
A sum of money triples itself in 15 years at simple interest. In how many years will it become 5 times itself?
A20 years
B25 years
C30 years
D35 years
✓ Correct Answer: C — 30 years
Triples means SI = 2P in 15 yrs. 5 times means SI = 4P. 2P in 15, so 4P in 30 years.
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