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## Homework Statement:

- If Ollie bought some records at .35 cents each and .45 cents each. If he spent a total of 4.25 how many records did he buy altogether? Explain.

## Relevant Equations:

- No relevant equations.

I've tried to answer but I've been coming up with nonsense answers, but I'll show my method and see if its right or wrong so I can get pointed in the right direction.

.35x + .45(35 - x) = 4.25, I think this is where my error is but I'm unsure.

Multiply by 100 to clear the decimals and I get 35x + 1575 -45x = 425 then I get -10x + 1575 = 425, then -10x = -1150, so x = 115

which gives me $ 40 . 25 so the answer seems close to the desired one but I'm still confused.

.35x + .45(35 - x) = 4.25, I think this is where my error is but I'm unsure.

Multiply by 100 to clear the decimals and I get 35x + 1575 -45x = 425 then I get -10x + 1575 = 425, then -10x = -1150, so x = 115

which gives me $ 40 . 25 so the answer seems close to the desired one but I'm still confused.