Posted by **Chauncey** on Tuesday, January 22, 2008 at 3:31pm.

I think this is an easy question but i just wanted make sure i have the right answer

Could you check my work

Some students make and sell jewelry in their spare time. Every week they have an avaiable 10,000 beads of various colors and sizes. They only have 20 hours to work on the jewelry. Each necklace takes 30 minutes to make and each bracelet takes 20 minutes to make. Only 50 beads are placed on each necklace,and 200 beads on each bracelet(yes the bracelet has more beads then the necklace, not a typo). The profit on every necklace is $3.50 and the profit on every bracelet is $2.50. The students want to make as much money as possible.

Define variable: x= necklace

y= bracelets

Write constraints

Write objective function for profit: i think it is P=3.5X+2.5Y

State the vertices in a chart....if i could just get the vertices that would be nice....i think it is (50,30)

Evaluate the profit for each point, but i think there is only one point in this problem

What is the maximum profit

i think it is 3,400

thanks for everything

- Algebra 2 Linear Programming -
**Damon**, Tuesday, January 22, 2008 at 5:14pm
agree with P = 3.5 x + 2.5 y

But constraints

Number of beads :

N = 50 x + 200 y must be </= 10,000

200 y = -50 x + 10,000

so on your graph

y = - .25 x + 50

Number of hours

Hr = .5 x + .333 y must be </= 20

.333 y = -.5 x + 20

so on your graph

y = -1.5 x + 60

so graph it

The number of beads line hits the y axis at 50 and the x axis at 200

The number of hours line hits the y axis at 60 and the x axis at 40

the two lines cross at

x = 8, y = 48 (8,48)

SO VERTICES

(0,0) of course

(0,50) all bracelets

(8,48)

(40,0) all necklaces

NOW do your profit at each point (4 including the trivial one at origin)

- Algebra 2 Linear Programming -
**Damon**, Tuesday, January 22, 2008 at 6:35pm
Profit at (0,0) = 0 of course

Profit at (0,50) = 3.5(0)+2.5(50) =125

Profit at (8,48) = 3.5(8)+2.5(48) =148

Profit at (40,0) = 3.5(40)+2.5(0) =140

so make 8 necklaces and 48 bracelets

Do you agree?

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