A sum becomes 4 times at simple interest in 10 years. What is the rate

1.	A sum becomes 4 times at simple interest in 10 years. What is the rate of interest?%!
A.	10%
B.	20%
C.	30%
D.	40%
Answer» D. 40%

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A sum becomes 4 times at simple interest in 10 years. What is the rate of interest?%!

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