Question
Rs. (n + 200) invested on simple interest amounts to Rs.
2,400 and Rs. 2,880 in 4 years and 6 years, respectively. Find the value of 'n'.Solution
Interest earned in 2 years = 2,880 - 2,400 = Rs. 480
Interest earned in 1 year = 480 ÷ 2 = Rs. 240
Interest earned in 4 years = 240 × 4 = Rs. 960
So, n + 200 = 2,400 - 960
Or, n + 200 = 1,440
Or, n = 1,240
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