Question
Asked Sep 29, 2019
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A man has 18 coins in his pocket, all of which are nickels and quarters. If the total value
of his change is $2.30, how many nickels and how many quarters does he have?

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Expert Answer

Step 1

Given,

           A man has 18 coins in his pocket, all of which are nickels and quarters and the total value of hi...

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xy 18 (i) Since, the total value of his change is $2.30 x(0.05)y(0.25) = 2.30 (i) Now, from equation (i), we have x 18 (18 y)(0.05)y (0.25) 2.3 . 0.9 0.05y 0.25y = 2.3 0.2y 2.3 0.9 0.2y 1.4 y 7 So, x 18 7 11

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Math

Algebra

Equations and In-equations