Question 1151085: Rob has 40 coins, all dimes and quarters worth $3.60. How many quarters does she have.
Found 3 solutions by Boreal, ikleyn, Alan3354:
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! x dimes
40-x quarters
x*0.10+(40-x)*0.25=.10x+10-.25x=3.60
so -0.15x=-6.4
x=42 2/3 which is non-integer
There is no way 40 dimes alone can be less than $3.60, let alone dimes and quarters of any number, at least the way I interpret the question.
Answer by ikleyn(52803)  (Show Source):
You can put this solution on YOUR website! .
Rob has 40 coins, all dimes and quarters worth $3.60. How many quarters does she have.
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With the given numbers, the problem HAS NO solution.
Also, who is Rob : "he" or "she" ?
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I am asking, because, according to the Internet, "The name Rob is a boy's name of English origin",
but the problem refers to "she" in its formulation.
Answer by Alan3354(69443)  (Show Source):
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