A lent Rs. 600 to B for 2 years and Rs. 150 to C for 4 years and received

A lent Rs. 600 to B for 2 years and Rs. 150 to C for 4 years and received altogether from both Rs.90 as simple interest. The rate of interest is
(a) 4%
(b) 5%
(c) 10%
(d) 12%

Anurag Mishra Professor Asked on 16th May 2016 in Maths.
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    Answer: (b) 5% 

    Solution:-
    A lent Rs.600 to B for 2 years and Rs.150 to C for 4 years and received altogether from both Rs.90 as interest. 
    Then, Rate of Interest = 90 x 100/1800
     = 5%

    Hence, the correct answer is option (b) 5%. 

    Anurag Mishra Professor Answered on 18th May 2016.
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