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### Discussion :: Simple Interest

1. A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both of them as interest. The rate of interest per annum is:

2.  A. 5% B. 7% C. 7$$\frac { 1 } { 8 }$$% D. 10%

Explanation :

 Then, $$[\frac { 5000*R*2 } { 100 } ]$$ + $$[\frac { 3000*R*4 } {100 }]$$ = 2200.

100R + 120R = 2200

 R =$$[ \frac { 2200 } { 220 }]$$ = 10.

Rate = 10%.

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