SOLUTION: Ben had twice as many nickels as dimes. Altogether, Ben had $4.20. How many nickels and dimes did Ben have?

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Question 428772: Ben had twice as many nickels as dimes. Altogether, Ben had $4.20. How many nickels and dimes did Ben have?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
5(2n)+10n=420
20n=420
n=21
Ben had 42 nickels and 21 dimes..