SOLUTION: a man buys many shirts at rate of 5 for $120.He intends to sell them for $30 each. How many shirts must he sell to make a profiit of $1200?

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Question 618966: a man buys many shirts at rate of 5 for $120.He intends to sell them for $30 each. How many shirts must he sell to make a profiit of $1200?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number of shirts he buys = +n+
So he pays +120%2A%28n%2F5%29+=+24n+ dollars
His total income from selling them is +30n+
His profit is:
+30n+-+24n+
For a profit of 1200,
+30n+-+24n+=+1200+
+6n+=+1200+
+n+=+200+
He must sell 200 shirts for a profit of $1200