Question 846280
You shop for milk and bread based on the weather report for a total of $72. Milk is $6 and the bread cost $3. You buy twice as much bread than milk. How much milk did you buy?
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Equations:
Quantity::   b = 2m
Value::  3b + 6m = 72 dollars
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Substitute for "b" and solve for "m":
3(2m) + 6m = 72
12m = 72
m = 6 (# of milk bought)
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Cheers,
Stan H.