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Algebra
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Oct 30th, 2014

1.

x+y=423

6.5x+8y=2836.5

13x+16y =5673

13x+13y= 5499

3y = 174

y =174/3 =58   Reserved

x = 423-58 = 365 General 

2.

x+y=110

15.5x+19.5y =1841

31x+39y=3682

31x+31y = 3410

8Y =272

y = 34    Adult

x=76      Youth

3.

x+y =24

9X+13Y = 264

9X+9Y=216

4Y =48

Y=12  Kenyan

X=12  Sumatran

4.

X+Y =10

0.25X+0.10Y=2.2

X+.4Y =8.8

X+Y=10

0.6Y =1.2

Y =1.2/0.6 =2  Brand B

X=8  Brand A

5.

X+Y=36

.18X+.09Y= 6.12

.18X+.18Y = 6.48

.09Y =0.36

Y =0.36/.09=4      9% solution

X=32   18% solution


Oct 30th, 2014

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