Sunday

December 21, 2014

December 21, 2014

Posted by **jonathan** on Saturday, December 15, 2007 at 8:36pm.

- math -
**drwls**, Saturday, December 15, 2007 at 8:58pmIs the total value $6.80?

If so, then let Q be the number of quarters and D be the number of dimes.

You know that

Q -D = 9, and

0.25Q + 0.1D = 6.80

Solving bu substitution,

0.25Q + 0.1(Q-9) = 6.80

0.35Q = 7.70

Q = 22

Now solve for D

- math -
**jonathan**, Saturday, December 15, 2007 at 9:01pmomg ty u are a super pro

- math -
- math -
**drwls**, Saturday, December 15, 2007 at 11:19pmty, yw :)

**Answer this Question**

**Related Questions**

math - There are 60 coins in a box containing only nickels, dimes, and quarters...

algebra 1 part 2 - Bobbie has 45 coins in dimes and quarters. The total value of...

math - A man has 21 coins in his pocket, all of which are dimes and quarters. If...

Math - Dave has quarters, dimes and nickles in his bank. He has 3 more dimes ...

math - marcy has a total of 100 dimes and quarters. if the total value of the ...

College Algebra - A coin jar contains nickels, dimes and quarters. There are 46 ...

math - 1. Ms.lynch has 21 coins in nickels and dimes. Their total value is $1.65...

math - Sal keeps quarters, nicles, and dimes in his change jar. He has a total ...

Algebra - Alycia's pggy bank has dimes and quarters in it. The numbers of dimes ...

alegbra 1 - gary has 100 quarters and dimes. If the total value of the coins is...