Posted by Cathy on Tuesday, October 13, 2009 at 11:46pm.
How would you solve this problem??
A piggy bank contains only nickels and dimes. In all there are 42 coins with a total value of $3.85. How many nickels are in the piggy bank??

math  Jim, Tuesday, October 13, 2009 at 11:52pm
two equations
: n+d=42
.05n+.10d=3.85 or 5n+10d=385

math  Cathy, Tuesday, October 13, 2009 at 11:59pm
Sorry forgot to post the answers, which one would it be??
And can you show how you solved it??
A3
B7
C17
D35
Thanks

math  Cathy, Wednesday, October 14, 2009 at 12:43am
Ok I got it. Its process of elimination. So it would be B7.
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