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I need help working this out

I need help working this out-example-1
User Emilpytka
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2 Answers

2 votes

I think in this situation the best method would be a guess and check. You know that there are 8 dimes more than there are nickels. So just keep increasing each number by one until you reach $1.40. If there were 9 dimes and 1 nickels it would add up to $0.95. If there were 10 dimes and 2 nickels, it would add up to $1.10. If there were 11 dimes and 3 nickels, it would add up to $1.25. If there were 12 dimes and 4 nickels, it would add up to $1.40. So your answer is 12 dimes and 4 nickels.

I hope this helped!

User Some Newbie
by
8.0k points
5 votes

d = n + 8

10d + 5n = 140

Solve this equations: d = 12 ∧ n = 4

A tool like photomath can solve this step by step for you.

12 Dimes and 4 Nickels.

User Darronz
by
7.5k points

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