Question

If Rs.3750 amount to Rs.4260 in 3 years at simple interest.Find:
i)the rate of interest
ii)the amount of Rs.7500 in 11/2 years at the same rate of interest.

it's simple interest fast plzzzzzz

Answer 1

If Rs.3750 amount to Rs.4260 in 3 years at simple interest.Find:i)the rate of interest
ii)the amount of Rs.7500 in 11/2 years at the same rate of interest.

Rate  = R,         P = Rs 3,750     t = 3 years  

Simple Interest = Rs 4,260 - Rs 3, 750 = Rs 510

P R t = 3, 750 * R * 3 = 510
              R = 170/3750 = 4.53 % 
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Simple interest on Rs 7, 500 for 11/2 years  at  R = 4.53%
     = Rs 1, 868.625 

Total sum = Rs 9, 368.625