SOLUTION: A large corporation wants to invest 1,200000.00. Part of this amount is invested at 12.5 percent and part at 15%. If the total interest earnings should be 155 000.00 per year, ho
Algebra ->
Percentage-and-ratio-word-problems
-> SOLUTION: A large corporation wants to invest 1,200000.00. Part of this amount is invested at 12.5 percent and part at 15%. If the total interest earnings should be 155 000.00 per year, ho
Log On
Question 681755: A large corporation wants to invest 1,200000.00. Part of this amount is invested at 12.5 percent and part at 15%. If the total interest earnings should be 155 000.00 per year, how much should be invested at 15% and how much as 12.5% Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Part I 15.00% per annum ------------- Amount invested =x
Part II 12.50% per annum ------------ Amount invested = y
1200000
Interest----- 155000
Part I 15.00% per annum ---x
Part II 12.50% per annum ---y
Total investment
x + 1 y= 1200000 -------------1
Interest on both investments
15.00% x + 12.50% y= 155000
Multiply by 100
15 x + 12.5 y= 15500000.00 --------2
Multiply (1) by -15
we get
-15 x -15 y= -18000000.00
Add this to (2)
0 x -2.5 y= -2500000
divide by -2.5
y = 1000000
Part I 15.00% $ 200000
Part II 12.50% $ 1000000
