SOLUTION: A total of $4100 is invested into two accounts paying 3% and 5% annual interest. In one year the combined interest on the accounts is $177. Find the amount invested at 3%

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Question 726993:

A total of $4100 is invested into two accounts paying 3% and 5% annual interest. In one year the combined interest on the accounts is $177.
Find the amount invested at 3%.
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
.05x+.03(4,100-x)=177
.05x+123-.03x=177
.02x=177-123
.02x=54
x=54/.02
x=$2,700 was invested @ 5%.
4,100-2,700=$1,400 was invested @ 3%
Proof:
.05*2,700+.03*1,400=177
135+42=177
177=177