Question

‘A’ lent Rs.1500 to 'B' for 3 years at certain rate of
simple interest and Rs.1200 to 'C' for the same
period and at the same rate. If he gets Rs.54 more
from 'B' than from 'C' then what is the rate percent?

Answer 1

Given: ‘A’ lent Rs.1500 to 'B' for 3 years at certain rate of  simple interest and Rs.1200 to 'C' for the same  period and at the same rate.

To find: What is the rate percent?

Solution:

• Now we have given that  ‘A’ lent Rs.1500 to 'B' for 3 years at a rate.

• So, it will be:

                = 1500 x R x 3 / 100

• Also ‘A’ lent Rs.1200 to 'C' for the same  period and at the same rate.

• So, it will be:

                = 1200 x R x 3 / 100

• Now we have given that he gets 54 Rs more, so the final equation will be:

                1500 x R x 3 / 100 - 1200 x R x 3 / 100 = 54

                45R - 36R = 54

                9R = 54

                R = 6

Answer:

            So the rate is 6%.

Answer 2

Answer:

Rate of interest is 6%.

Step-by-step explanation:

Let , rate of interest = r .

p = initial amount.

t = time .

i = simple interest amount.

simple interest amount (i) = (p * r * t)/100.

(1500 * r * 3)/100 - (1200 * r * 3)/100 = 54 .

or , 45r - 36r = 54.

or , 9r = 54.

or , r = 6.

Rate of interest is 6%.

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