SOLUTION: Mindy has 49 nickels and dimes altogether worth $2.80. Find out how many she has of each coin

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Question 421444: Mindy has 49 nickels and dimes altogether worth $2.80. Find out how many she has of each coin
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
n+d=49
5n+10d=280
5n+5d=245
5d=35
d=7
n=42
Mindy has 42 nickels and 7 dimes..