1.

A certain sum of money amounts to Rs. 678 in 2 years and to Rs. 736.50 in `3 1/2` years. The rate of interests is:

Answer» `A=P(1+(RT)/100)`
`678=P(1+(R*2)/100)-(1)`
`736.5=P(1+(R*(7/2))/100)-(2)`
dividing equation 1 and 2
`678/736.5=(1+(2R)/100)/(1+(R)/100)`
solving this
R=6.5%
option B is correct.


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