SOLUTION: John collected 150 nickels and dimes. He has 30 more nickels than dimes. How many of each does he have?

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Question 1057627: John collected 150 nickels and dimes. He has 30 more nickels than dimes. How many of each does he have?
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
n = d+30 since he has 30 more nickels than dimes, to make them equal you have to add 30 to the dimes.
:
n+d = 150 substitute for n:
d+30+d = 150
2d = 120
d = 60 he has 60 dimes and 150-60 = 90 nickels