X lent Rs. 5000 to Y for 2 years and Rs. 3000 to Z 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

5%

7%

8%

10%

Let the rate be R% p.a. Then, (5000xRx2/100) + (3000xRx4/100) =>100R+120R= 2200 => R=(2200/220) Rate = 10%.

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