A certain sum of money becomes triple of itself in 26 years at simple interest. In how many years it will becomes five times of itself?
Answer & explanation
Correct answer: option 2
Let Principal = 100 Rs
It becomes triple in 26 years = 300
So, Interest = 300-100=200
Same Principle become five times = 500
So, Interest = 500-100=400
So, Interest becomes double from 200 to 400
hence time also become double
i.e. 26×2=52 years
(it means if interest is double, time also double itself)