Question

a sum amount to 2400rs at the rate of 15% simple interest per annum in 4 years find the sum
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Answer 1

Answer:

Given,

Amount (A) = ₹ 2400

Rate (R) = 15℅

Time (T) = 4 years

Let the Principal (P) be x

By formula,

Simple Interest (S.I) = (P×R×T) / 100

= (x×15×4) / 100

= 60x/100

= 6x/10

= 3x/5

A.T.Q,

Principal + S.I = Amount

or, x + 3x/5 = 2400

or, (x×5 + 3x×1) / 5 = 2400

or, (5x + 3x) / 5 = 2400

or, 8x = 2400×5

or, 8x = 12000

or, x = 12000/8

or, x = 1500

Answer :- The principal (sum) is ₹ 1500 .