MAT 142 1.1 Proportional Reasoning
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Description
MAT 142 Problem set
Unit: Proportional Reasoning
Topic: Mathematical Reasoning
Directions: Solve the following problems. Please show your work and explain your reasoning.
1) LaDonna has a banana. She eats 3/5 of it and then gives the rest to her younger brother, Hector.
Hector eats 3/5 of what he was given and then gives the rest to his baby sister, Yolanda. Yolanda eats
half of what she was given and then throws the rest away. What percentage of the banana was
thrown away?
2) The gauge of an oil tank indicated that it was 1/7 full. After 240 gallons were added, the gauge
indicated that the tank was now 4/7 full. How many gallons does the tank hold? (Assuming that the
gauge is accurate)
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