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peppers

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by ketkoag » Sat Apr 18, 2009 1:30 am
The cost to planting a tomato is $0.75, and a pepper is $0.6. The total cost to planting some tomatoes and peppers is $30. Each tomato needs four square feet of land and each pepper need one square feet of land. If the total area used is 116 square feet, how many peppers are planted?

OA: 20 how?
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by moutar » Sat Apr 18, 2009 1:56 am
Let t be the number of tomatoes and p be the number of peppers.

From the information given we can form 2 simultaneous equations.

.75t + .6p = 30 (1)

4t + p = 116 (2)


(1) x 20: 15t + 12p = 600 (3)

(2) x 12: 48t + 12p = 1392 (4)

(4) - (3): 33t = 792
t = 24

t=24 into (2): 4x24 + p = 116
96 + p = 116
p = 20
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by ketkoag » Sun Apr 19, 2009 7:13 am
oops i was doing calculation mistakes :oops:
anyways thanks a lot..
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