Monday

July 28, 2014

July 28, 2014

Posted by **Benjamin** on Sunday, May 17, 2009 at 1:23pm.

- algebra -
**drwls**, Sunday, May 17, 2009 at 1:58pmLet N be the number of nickels and D be the number of dimes. Here is what you know:

N = 4D

10D + 5N = 810

-----------------

Now substitute 4D for N

10D + 20D = 810

30D = 810

You take it from there

- algebra -
**bob sanhowyour**, Monday, October 18, 2010 at 4:32pm30D=810 check

=D=810/30 108*.05+27*.1=8.1

=D=27 5.4+2.7=8.1

8.1=8.1

x=y*4

x=27*4

x=108

y=27

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