Question
Rs. (x + 800) is invested at 12%
simple interest per annum for 5 years. The interest earned is Rs. (x - 320). If Rs. (x - 400) is invested at 8% simple interest per annum for 4 years, how much less will the interest earned be compared to the previous interest earned?Solution
ATQ,
Case I : Principal: x + 800 = 2000+800 = 2800 Interest: x − 320 = 2000 − 320 = 1680 Case II: Principal: x − 400 = 2000 − 400 = 1600 Interest: (1600×8×4)/100 = 512 Difference:1680 − 512 = 1168 Therefore, the second interest is Rs. 1168 less than the first.
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