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March 31, 2015

March 31, 2015

Posted by **abby** on Friday, January 8, 2010 at 3:55pm.

- math -
**Marth**, Friday, January 8, 2010 at 4:19pmlet x = the number of $5 bills.

let y = the number of $10 bills.

"a bank teller had $2750 in 10 dollar bills and5 dollar bills"

5x + 10y = 2750

"he had twice as many 10 dollar bills as 5 dollar bills"

y = 2x

Solve for x and y. Substitution is likely easiest.

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