SOLUTION: A man bought 15 books for #9800. Some of these books cost #600 each and the rest cost #700 each. How many of each type did he buy.

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Question 1192760: A man bought 15 books for
#9800. Some of these books cost #600 each
and the rest cost #700 each. How many of
each type did he buy.
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
The same thing as any two-part mixture problem.

v of the #700 books
15-v of the #600 books
total cost was #9800.

700v%2B600%2815-v%29=9800, accounting for the total cost
.
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