Math question ?

In exactly how many different ways can you make exactly $0.75 using only nickels dimes and quarters, if you must have at least one of each coin?  

A)4

B)6

C)7

D)12

2 Answers

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  • 2 months ago

    Do your own work. Watch out for typos.

  • 2 months ago

    Ones of each coin would be 40¢, so this is equivalent to asking how you can make 35¢ using any number of each of those coins.

    1Q + 1D = 35¢

    1Q + 2N = 35¢

    3D + 1N = 35¢

    2D + 3N = 35¢

    1D + 5N = 35¢

    7N = 35¢

    Add one of each coin and you get the solutions for 75¢.

    2Q + 2D + 1N = 75¢

    2Q + 1D + 3N = 75¢

    1Q + 3D + 2N = 75¢

    1Q + 3D + 4N = 75¢

    1Q + 2D + 6N = 75¢

    1Q + 1D + 8N = 75¢

    Answer:

    B) 6 ways

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