Exam
Maths Puzzle
Numerical Ability
Simple & Compound Interest
if 12000 is compound and it doubles in 5 years. what is the total amount in 20 years.
Read Solution (Total 1)
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- Rs. 1,92,000
With C.I. amount in 'n' years = Principal(1 + r/100)ⁿ
For n=5, we have 12000 (1 + r/100)⁵ = 24000
=> (1 + r/100)⁵ = 2
For n=20, we have (1 + r/100)⁵*⁴ = 2⁴
So amount becomes 2⁴ or 16 times = 16*12000=Rs. 192000 - 6 years agoHelpfull: Yes(0) No(0)
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