Question 369538
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Hi,
Let x represent the number of tens.  then (132-x) is the number of fives.
question states
5*(132-x) + 10x = 760 'dollars'
solving for x
5x =100
x = 20, the nunber of tens.  

checking our answer
number of fives would be 112 (132-20)
5*112 + 10*20 = 560 + 200 = 760