Posted by alicia on Monday, September 28, 2009 at 10:09pm.
Cycle Paths, inc. makes bicycles, tricycles, and unicycles. Last week they made 88 more bicycles than unicycles, and 5 times as many tricycles as unicycles. If they made 40 more bicycles than tricycles, how many unicycles did they make?

algebra  MathMate, Tuesday, September 29, 2009 at 7:32am
Let summarize the data
B=number of bicycles made last week
T=number of tricycles
U=number of unicycles
B=88+U ....(1)
5U=T .....(2)
B=T+40 ....(3)
Put (2) in (3) to eliminate T
B=5U+40 ....(4)
Equate (1) and (4) to eliminate B
5U+40 = 88 + U
4U = 48
U = 12
Substitute U in (2)
T = 5*12 = 60
and in (1)
B = 88 + 12 = 100
So Cycle Paths made 12 Unicycles, 60 tricycles and 100 bicycles.
Please check these numbers against the original question.
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