Answers to Assignment
1. Let x = minutes used by Cindy in the whole month of July
.20 x = .40
x = .40 / .20
x = 72 minutes
2. Let x = be the time that the trip had took
62 miles / hour = 149 miles / x
62 miles / hour (x) = 149 miles
x = 149 miles / 62 miles / hour
x = 2.40 hours
3. Let x = be the number of servings
3.25 (1.25) + 8.75 (2) = 3x
4.0625 + 17.5 = 3x
21.5625 = 3x
x = 7.1875
or ≈ 7 servings / people
Credit:ivythesis.typepad.com
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