To calculate: The total time taken to shovel the snow off family’s driveway by Sara and her sister both work together.

Answer to Problem 4PSP
The Sara and her sister shovel the driveway in
Explanation of Solution
Given information: Sara can shovel the driveway in
Calculation:
To calculate the time taken by Sara and her sister to shovel the driveway, evaluate the work rate and the time
Let time (in minutes) taken to split the cord of wood is
The sum of work Sara and her sister equals 1 whole shovel the driveway.
Therefore, the equation obtained as:
Hence, the Sara and her sister shovel the driveway in
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Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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