Seudónimo Seudónimo

20-01-2017
Mathematics

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What was the price of one drink? And what was the price for one pretzel?

What was the price of one drink And what was the price for one pretzel class=

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Аноним Аноним

20-01-2017

d for drinks
p for pretzel

3d + 3p = 9
3d = 9 -3p
d = 3 - p

replace d = 3 - 9 into 4d + 2p = 8.5
4d + 2p = 8.5
4(3 - p) + 2p = 8.5
12 - 4p + 2p = 8.5
-2p = 8.5 - 12
-2p = -3.5
p = 1.75

answer: the price for one pretzel was $1.75

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figueroajorge1 figueroajorge1

20-01-2017

the sodas are $1.50 and the pretzels are $1.25

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