SOLUTION: (The title of the chapter is systems of Linear Equations in two varibles).
Question:
A man has 14 coins in his pocket, all of which are dimes and quarters. If the total value
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Question 256233: (The title of the chapter is systems of Linear Equations in two varibles).
Question:
A man has 14 coins in his pocket, all of which are dimes and quarters. If the total value of his change is $2.75, how many dimes and how many quarters does he have.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
"A man has 14 coins" ___ d + q = 14 ___ 10d + 10q = 140
"the total value of his change is $2.75" ___ 10d + 25q = 275
subtracting eqns ___ 15q = 135 ___ q = 9
substituting ___ d + 9 = 14 ___ d = 5
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