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March 29, 2015

March 29, 2015

Posted by **Maddy** on Tuesday, November 16, 2010 at 8:33pm.

A company manufactures bicycles and tricycles. The total number of frames the company manufactures cannot exceed 80 per month. It takes the company 1 hour to assemble a bicycle and 2 hours to assemble a tricycle. The assembly machine is only available for 100 hours each month. If the company makes a profit of $50 on each bicycle and $70 on each tricycle, determine the number of bicycles and tricycles that will maximize profits each month. Indicate the maximum profit the company can make each month.

This is what I have so far: x=#of bicycles y=#of tricycles

x>=0 y>=0 P=50x +70y

Now I don't know what to do. Any help would be greatly appreciated. Thanks

- math 11 -
**Damon**, Tuesday, November 16, 2010 at 8:59pmYou need

b+t </= 80 (frames limit)

b + 2 t </= 100 (machine hour limit)

graph those t on x axis, b on y axis

they cross at

(80-t)+2 t = 100

t = 20

b = 60

look at resulting quadrilateral including axes, must be inside it

so we have three realistic (t,b) points

(0,80)

(20,60)

(50,0)

check

p = 70 t + 50 b

at those three points

which gives max p?

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