Question 1188346
<pre>Instead of doing your homework for you, I'll do another one exactly like it step
by step.</pre>A collection of nickels and dimes makes $2.10. How many of each
coin are there if there are three times as many dimes as nickels?<pre>
0.05N + 0.10D = 2.10
            D = 3N

Substitute 3N for D in 0.05N + 0.10D = 2.10

0.05N + 0.10(3N) = 2.10
   0.05N + 0.30N = 2.10
           0.35N = 2.10
               N = 2.10/0.35
               N = 6

Substitute 6 for N in D = 3N

D = 3(6)
D = 18

Answer: 6 nickels and 18 dimes

Now do yours the exact same way.

Edwin</pre>