Mr R coin bank consists of $10 bills and $5 bills only. if there 75 bills worth $ 450, how many $10 bills are there?

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- Aug 5th 2012, 10:10 AMrcsmoney problem
Mr R coin bank consists of $10 bills and $5 bills only. if there 75 bills worth $ 450, how many $10 bills are there?

- Aug 5th 2012, 10:11 AMskeeterRe: money problem
- Aug 6th 2012, 08:13 AMrcsRe: money problem
please correct me if im wrong:

10x + 5y = 450

75( x+ y) = 450 - Aug 6th 2012, 08:35 AMskeeterRe: money problem
- Aug 6th 2012, 09:05 AMrcsRe: money problem
- Aug 6th 2012, 09:10 AMskeeterRe: money problem
- Aug 6th 2012, 09:30 AMrcsRe: money problem