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The total weight of a container and the cookies it holds is 2 pounds. After ¾ of the cookies are eaten, the container and the remaining cookies weigh 0.8 pounds. What is the weight of the empty container in pounds?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
E. 0.5
Let the weight of the empty container = w
(2 - w) = weight of the cookies; and one quarter of the cookies weigh (2 - w)/4
One quarter of the cookies + container = 0.8 = w + (2 - w)/4
Multiply through by 4; 3.2 = 4w + 2 - w
1.2 = 3w; w = 0.4
 
 
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This is a 20 question exam to help you study for the Math section of the SAT.
Taken: 3,879 times
Added: 10/29/2008
Liked: 1 time
Audience: High School
Tags: Math, SAT

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