Three Coffees and two muffins cost a total of $7. Two coffees and four muffins cost
$8. what is the individual cost price of a single coffee and a muffin?
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1
Answer:
coffee = x
muffins = y
3x + 2y = 7 - (1)
2x + 4y = 8 - (2)
x = 7/3 - 2y/3
x = 8/2 - 4y/2
7/3 - 2y/3 = 8/2 - 4y/2
14 -4y = 24 - 12y
8y = 10
y = 5/4
3x = 7 - 2y
3x = 7 -2*5/4
3x = 7 - 5/2
x = 1/3
coffee = 1/3 of a $
muffin = 5/4 of a $
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