SOLUTION: used books and videos were sold at a recent libary fund raiser. A total of 175 items were sold. Books cost $5 each and videos cost $6 each. A total $910 was collected. Write a syst

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Question 707863: used books and videos were sold at a recent libary fund raiser. A total of 175 items were sold. Books cost $5 each and videos cost $6 each. A total $910 was collected. Write a system of equations to represent this situation. How many videos were sold?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
B+V=175
B=175-V
5B+6V=910
5(175-V)+6V=910
875-5V+6V=910
V=910-875
V=35 NUMBER OF VIDEOS SOLD.
B+35=175
B=175-35
B=140 NUMBER OF BOOKS SOLD.
PROOF:
5*140+6*35=910
700+210=910
910=910