Tocalculate:The total time taken to shingle the roof when both contractor and assistant work together.
Answer to Problem 2PSP
The contractor and assistant shingle the roof in
Explanation of Solution
Given information:To shingle the roof alone it takes
Calculation:
Calculate the time taken by contractor and assistantto shingle, evaluate the work rate and the time.
Let time (in days) taken to shingle the roof is
The sum of work of contractor and assistant’s work equals 1 whole roof shingle.
Therefore, the equation obtained as:
Hence, the contractor and assistant shingle the roof in
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Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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