SOLUTION: jhon has a totla of 13 coins in his pocket.of the 13 coins,they are all eaither quarters or dimes.the total value of coins is $2.50. how mnay dimes does jhon have in his pocket?

Question 312774: jhon has a totla of 13 coins in his pocket.of the 13 coins,they are all eaither quarters or dimes.the total value of coins is $2.50. how mnay dimes does jhon have in his pocket?

Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Let x = number of quarters
13-x = number of dimes

The equation, working in cents, is
25x+ 10(13-x)= 250
25x + 130-10x=250
15x+130=250
15x=120
x=120/15
x=8 quarters
13-x=13-8 = 5 dimes

Check:
8 quarters = $2.00
5 dimes = .50

Total = $2.50, so it checks.

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Seminole State College of Florida
Altamonte Springs Campus
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