SOLUTION: )Mr x invested a total of Rs 10,000 in three different accounts , the accounts paid simple interest at an annual rate of 8%, 9%,7.5% respectively. Total interest earned for the yea

Question 1089623: )Mr x invested a total of Rs 10,000 in three different accounts , the accounts paid simple interest at an annual rate of 8%, 9%,7.5% respectively. Total interest earned for the year was Rs 845 . The amount in the 9% account was the twice the amount invested in the 7.5% account. How much did Mr.x invest in each account?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
in account A invested is x at 7.5%
in account C invested is 2x at 9%
in account B invested is (10000-3x) at 8%, since that is what is left over after x and 2x are invested.
The interest=845
845=.075x+.18x+800-.24x
45=.015x
x=3000 R at 7.5% or 225 R
6000 R at 9% or 540 R
1000 R at 8% or 80 R
They add to 845 R

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