SOLUTION: a man invested $3,500, part of it at a yearly rate of 4% and the rest at 5%. He received a total annual interest of $153. How much did he invest at each rate?
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Question 883311: a man invested $3,500, part of it at a yearly rate of 4% and the rest at 5%. He received a total annual interest of $153. How much did he invest at each rate?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1.
.
.
.
2.
Multiply eq. 1 by -4 and add to eq. 2,
Then from eq. 1,
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