Posted by **Anonymous** on Tuesday, December 7, 2010 at 7:39pm.

Matt has twice as many quarters as dimes in his coin collection. If the dimes and quarters together total $9.00 how many of each kind of coin does he have?

- 8th grade math -
**Justin**, Wednesday, December 8, 2010 at 10:46pm
.10*(1/2)x+.25x = 9.00

x(.10*(1/2)+.25)= 9.00

x= 9.00

___(.10*(1/2)+.25)

x = 30

Since you times the dimes by 1/2, you take half of x.

So Dimes = 15, and Quarters = 30

Check, .10(15)+ .25(30) = 9.00

## Answer This Question

## Related Questions

- math - a childs bank contains $6.30 in dimes and quarters. there are twice as ...
- Math - Mr.Adams had a coin collection including only nickels, dimes, and ...
- 7th Grade Math 123 - Write one or two equations to represent the situation below...
- algebra - The ratio of quarters to dimes in a coin collection is 5:3. You add ...
- math - In a collection of coins worth $9.13, there are twice as many dimes as ...
- algebra - Jim has some nickels, dimes and quarters worth $5.30. There are five ...
- Math - Raul say he has equal number of dimes and quarters and four times as ...
- Math word problem - lydi sold 4/5 of her candles to raise money for the band. ...
- math - Sarah has a collection of nickels, dimes, and quarters worth $9.25. She ...
- 6 grade math - Please I need help on just the set up using a guess and check ...

More Related Questions