Question

A lends rupees 2500 to B and a certain sum to C at the same time at 7 percent per annum simple interest . If , after 4 years , A altogether receives rupees 1120 as interest from B and C , find the sum lent to C .

Answer 1

Therefore,
Interest occurred on money lent to B = PRT/100
= (2500 × 7 × 4) /100 = 70000/100
= 700
Interest = 700
Interest received by C = 1120 - 700
= 420
Therefore , Principle will be, x

420 = x × 7 × 4/100
28x/100 = 420
28x = 42000
x = 1500
Sum lent to C = 1500

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