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 ...
- 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 word problem - lydi sold 4/5 of her candles to raise money for the band. ...
- 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 - Sarah has a collection of nickels, dimes, and quarters worth $9.25. She ...
- Math - a piggy bank contains $8.80 in quarters, dimes and nickles. there are two...
- math - grant's change rack contained $8.80 in quarters, dimes, and nickels. ...
- Math - Raul says he has equal numbers of dimes and quarters and four times as ...

More Related Questions