A certain sum is to be divided between A and B so that after 5 years the amount received by A is equal to the amount received by B after 7 years. The rate of interest is 10%, interest compounded annually. Find the ratio of amounts invested by them.

Answer

A

Explanation

C.P. =Rs. 60
`M.P. =(200)/(300)xx60+60`
`=40+60`
`100`
Total C.P. `60xx5=300`
Total selling price should be =380
S.P. of item III by seller E
`=(380-64-67-86-84)=380`
`:.` Minimum required discount =`(100-79)=21%`