Duke was at a garage sale when he spotted DVDs on sale.  They were separated by price into 2 different boxes.  In the first box, he found 10 movies that he wanted.  These were $2.00 apiece.  The second box was marked $5 each and he found 5 movies he wanted.  What was the average price of each of the DVDs he bought?
In the first box he bought 10 DVDs at $2.00 each, so he paid 10*2 = $<<10*2=20.00>>20.00
In the second box he bought 5 DVDs at $5.00 each, so he paid 5*5 = $<<5*5=25.00>>25.00
He bought 10+5 = <<10+5=15>>15 DVDs
He spent $20 + $25 = $<<20+25=45.00>>45.00
The average price of each DVD is $45/15 = $<<45/15=3.00>>3.00 each
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