A sum of money rises four times itself at 15% per annum over a certain time. Find the number of years.
A) 10 years
B) 15 years
C) 20 years
D) 25 years
Please explain for step by step....
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Step-by-step explanation:
four times mean 300%
change in value /previous value* 100
means 300/100*100 = 300
300/15=20 year
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