Question 1062995
Carla and Benicio work in a men's clothing store. They earn commission from each suit and each pair of shoes they sell. 
For selling 3 suits and one pair of shoes, Carla has earned $47 in commission.
3u + s = 47 dollars
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 For selling 7 suits and 2 pairs of shoes, Benicio has earned $107 in commission.
7u + 2s = 107 dollars
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 How much do the salespeople earn for commission for the sale of a suit? for the 
sale if a pair of shoes? Write a system of equation to represent situation. Then, solve by the system by substitution. 
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The system::
3u + s = 47
7u + 2s = 107
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s = 47-3u
Substitute for "s" and solve for "u"::
7u + 2(47-3u) = 107
7u + 94 - 6u = 107
u = $13 (price of one suit)
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Solve for "s":
s = 47-3u
s = 47-3*13
s = $8 (price of one pair of shoes)
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Cheers,
Stan H.
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