SOLUTION: Each of the ten volumes of the collected works of Theodore Sturgeon is available in paperback for $\$$15 or in hardcover for $\$$25. Theresa buys a copy of each of the ten volumes
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Question 1105087: Each of the ten volumes of the collected works of Theodore Sturgeon is available in paperback for $\$$15 or in hardcover for $\$$25. Theresa buys a copy of each of the ten volumes for a total of $\$$220. How many hardcover volumes did she buy? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! P=x
H=10-x
x*15+(10-x)25=220
15x+250-25x=220
-10x=-30
x=3 paperback@$15=$45
10-x=7 hardcover@$25=$175ANSWER
They add to $220.
