Question

At what rate percent per annum will the S.I on 960 for 1 1/2 years be the same as the simple interest on rupees 2400 for 8 months at 9% per annum

Answer 1

Answer:

360%

Step-by-step explanation:

For the first case we need to find the SI which is equal to the SI of the second case, therefore,

Principal = Rs. 2400

Rate = 9%

Time = 8 months

SI = P*R*T/100 = 2400 * 9 * 8 / 100 = 24 * 72 =

= Rs. 1728

Now for the first case,

SI = Rs. 1728

Principal = Rs. 960

Time = 11/2

Thus rate = 100 * SI / P * T = 100 * 1728 / 960 * 11/2

= 100 * 1728 * 2 / 960 = 200 * 1728 / 960

= 360%

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