Question

one-half of the capital is invested at 7⅓% simple interest, one-third at 12½% simple interest and the rest at 12% simple interest. what is the average interest rate of a?​

Answer 1

Answer:

Let the capital be Rs.x

Then,

(

3

x

×

100

7

×1)+(

4

x

×

100

8

×1)+(

12

5x

×

100

10

×1)=561

300

7x

+

50

x

+

24

x

=561

51x=561×600

x=6600