SOLUTION: A total of $3000 was invested, part of it at 5% interest and the remainder at 7%. If the total yearly interest amount is $195, how much was invested at 5%?

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Question 710001:
A total of $3000 was invested, part of it at 5% interest and the remainder at 7%. If the total yearly interest amount is $195, how much was invested at 5%?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
.07X+.05(3000-X)=195
.07X+150-.02X=195
.02X=195-150
.02X=45
X=45/.02
X=2250 ANS. FOR THE 7% INVESTMENT.
3000-2250=750 ANS. FOR THE 5% INVESTMENT.
PROOF:
.07*2250+.05*750=195
157.5+37.5=195
195=195