SOLUTION: An example of my practice word problem for Algebra - I have worked it out and can not get the answer. Susan has been saving money in a vacation fund. She has a jar filled with q

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Question 668972: An example of my practice word problem for Algebra - I have worked it out and can not get the answer.
Susan has been saving money in a vacation fund. She has a jar filled with quarters and dollar coins. So far, she has saved $76.50. The number of quarters is 5 more than 3 times the amount of dollar coins she has saved. How many of each coin does she have?
D = Dollar
Q = 3D + 5
3d + d + 5 = 76.50
4d + 5 = 76.50
4d = 76.50 - 5
4d = 71.50/4
d = 17.875
AGH I can not get the answer- plase help! Thank you!!
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

Number of Dollars: D

Number of quarters:  3D + 5 

CENTS makes sense

 100D + 25(3D + 5) = 7650¢

        175D = 7650 - 125

        175D = 7525

           D = 43, the number of dollar coins.  There are 134 quarters. 

and..

  

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