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Asked Nov 5, 2019
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Worker A can complete a task in 7 hours while worker B can complete the same task in 9 hours. How long (in hr) would it take the workers to complete the task together? (Enter an exact number as an integer, fraction, or decimal.)

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Expert Answer

Step 1

Given: Worker A can complete a task in 7 hours while worker B can complete the same task in 9 hours. How long (in hrs.) would it take the workers to complete the task together?

Step 2

Now from the give i...

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A can complete whole work in = 7hrs B can complete whole work in =9hrs Now 1 units A's work in 1 hour 1 units 9 B's work in 1 hour Therefore 1 1 Both A and B can complete work in 1 hour = | 9 9+7 16 units 63 Both A and B can complete work in 1 hour =| 63 63 hrs So, the whole work will be completed by both in 16

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