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Posted by **Vamma** on Monday, October 19, 2009 at 6:15pm.

(i found the answer through guess and check but i need to know the equation....btw the answer is 80 nickels and 20 dimes....plz help me find the equation)

- math algebra 1 -
**jim**, Monday, October 19, 2009 at 6:22pmLet n be the number of nickels

d the number of dimes

n = 4d because we are told "4 times as many nickels as dimes"

The total value is:

n * 5 + d * 10 = 600

Divide across by 5:

n + 2d = 120

and n=4d, so

4d + 2d = 120

6d = 120

d= 20

So n = 4d = 80

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