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What is the rate of interest at which Binod has invested money? A. The compound interest at this rate of Rs.2500 in 2 yrs is equal to the simple interest in 3 yrs of Rs. 5150 at the same rate. B. The total simple interest on an investment of Rs. 12000 for 3 yrs and Rs. 10000 for 5 yrs at this rate is R. 5160 C. In 3 yrs Rs. 1500 at the same rate becomes Rs. 1725 by simple interest.A. Any of themB. A and either B or CC. Only CD. Only A and either B or C |
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Answer» Correct Answer - A Let the rate of interest be `r%` `A. 2500[(1+(r)/(100))^(2)-1]=5150xxrxx(3)/(100)` `B. 12000xxrxx3/100+10000xxrxx5/100=5160` `C. r=(1725-1500)/(3xx1500)xx100=5%` Hence any one of them is sufficient. |
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