Simple Interest Q9

9.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

             A.  5%          B.  7%

            C.  8%           D.  10%

Answer:Option D

Let the rate be R% p.a.

Then, (5000xRx2/100) + (3000xRx4/100)

‹=›100R+120R= 2200

‹=›R=(2200/220)

Rate ‹=›10%.