Question 518901: Mr.Euveja has a total amount of 25,000.He invested this in 2 funds {(Bank A paying 6%)&(Bank B paying 8%) both as annual interest. The combined annual interest is 1,800.
HOW MUCH OF THE 25,000 IS INVESTED INEACH FUND???
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website! Investment A 6.00% per annum ---x
Investment B 8.00% per annum ---y
x + y= 25000 ------------------------1
6.00% x + 8.00% y= = $1,800.00
Multiply by 100
6 x + 8 y= = $180,000.00 --------2
Multiply (1) by -6
we get
-6 x -6 y= = -150000.00
Add this to (2)
0 x 2 y= = $30,000.00
divide by 2
y = $15,000.00 investment at 8.00%
Balance $10,000.00 investment at 6.00%
CHECK
$10,000.00 --------- 6.00% ------- $600.00
$15,000.00 ------- 8.00% ------- $1,200.00
Total -------- -------------- $1,800.00
m.ananth@hotmail.ca
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