ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!


    Question

    A man invested certain sum at simple interest of r% p.a.

    such that it amounts to 170% of itself in 7 years. Find the interest earned when Rs. 2800 is invested at simple interest of r% p.a. for 3 years.
    A Rs. 800 Correct Answer Incorrect Answer
    B Rs. 820 Correct Answer Incorrect Answer
    C Rs. 840 Correct Answer Incorrect Answer
    D Rs. 830 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the sum invested be Rs. тАШPтАЩ Therefore, interest earned in 7 years = 1.7P тАУ P = Rs. 0.7P ATQ; 0.7P = (P ├Ч r ├Ч 7) ├╖ 100 Or, r = 70 ├╖ 7 Or, r = 10 So, required interest earned = (2800 ├Ч 10 ├Ч 3) ├╖ 100 = Rs. 840

    Practice Next
    More Simple and compound interest Questions

    Relevant for Exams:

    ask-question