Question:
Some amount out of Rs. 7000 was lent at 6% per annum and the remaining at 4% per annum. If the total simple interest form both the fractions in 5 yrs was Rs. 1800, find the sum lent at 6% per annum.
A5000
B4000
C3000
D2000
Answer:
B. 4000
Explanation:
Let ‘x’ be the sum lent at 6% and (7000 - x) be the sum lent at 4% Interest on x = (x × 5 × 6)/100 = 0.3x Interest on (7000 - x) = (( 7000 - x) × 5 × 4)/100 = 0.2 × (7000 - x) = 1400 - 0.2x = 0.3x + 1400 - 0.2x = 1800 x = 4000
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