Homework Help: math

Posted by ranujan on Sunday, March 8, 2009 at 10:15pm.

lavere has sixty-one coins, all of which are dimes and quaters. if the total value of the coins is $9.85, how many of each kind of coins has she?

math - drwls, Monday, March 9, 2009 at 10:23am
Let the two numbers of coins be D and Q.
Solve this pair of equations:
D + Q = 61
10D + 25Q = 985 (total number of cents)
10D + 10 Q = 610
15 Q = 375
Q = ?
Take it from there
math - Jazmin, Thursday, April 5, 2012 at 11:52pm
Q=25
math - Jazmin, Thursday, April 5, 2012 at 11:52pm
Q=25

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