SOLUTION: Maggie makes a $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no bills and gives her the change in quarters and fifty-cent pieces. There are 30 coins in all.

Question 176718: Maggie makes a $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no bills and gives her the change in quarters and fifty-cent pieces. There are 30 coins in all. How many of each kind are there?

please help thank you!!
Answer by checkley75(3666) (Show Source): You can put this solution on YOUR website!
20-9.25=10.75 is the amount of change.
.25x+.5(30-x)=10.75
.25x+15-.5x=10.75
-.25x=10.75-15
-.25x=-4.25
x=4.25/-.25
x=17 number of quarters.
30-17=13 number of half dollares.
Proof:
.25*17+.50*13=10.75
4.25+6.50=10.75
10.75=10.75

RELATED QUESTIONS
Maggie makes a $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no... (answered by solver91311,checkley75)

Making Change. Christina makes a $9.25 purchase at a bookstore in Reno with a $20 bill.... (answered by Alan3354)

Christina makes a $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no (answered by solver91311)

Christina makes a $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no (answered by stanbon)

Christina makes $9.25 purchase at a bookstore in Reno with a $20 bill. The store has no... (answered by rfer)

Christina makes a $9.25 purchase at a bookstore with a $20 bill. The store has no bills... (answered by stanbon)

Christina makes 9.25 purchase at a bookstore with $20 bill. The store has no bills and... (answered by addingup)

A student makes a $10.50 purchase at the bookstore with a $20.00 bill. The store has no... (answered by mananth)

A student makes a $10.50 purchase at the bookstore with a $20.00 dollar bill. The store... (answered by solver91311,Sunny Day,josmiceli)