A sum of money at a certain rate per annum of simple interest doubles – McqOptions

MCQOPTIONS

1.	A sum of money at a certain rate per annum of simple interest doubles in the 5 years and at a different rate becomes three times in 12 years. The lower rate of interest per annum is = ?
A.	15%
B.	20%
C.	15341534 %153415341534153415341534151515343433441534
D.	16231623 %16231623162316231623162316232322331623
Answer» B. 20%

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