Q49 of 90 Page 133

Mohan lends Rs 4800 to John for 9/2 years and Rs 2500 to Shyam for 6 years and receives a total sum of Rs 2196 as interest. Find the rate per cent per annum.

Let simple interest for both the cases be x%


For Mohan,


P = 4800



So, simple interest is




For Shyam,


P = 2500


Time(n) = 6 year


So, simple interest is




This is given in the question the total interest receive is 2196


So,


216x + 150x = 2196


366x = 2196



x = 6%


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