Mathematics · Time and Work
A can complete a task in 10 days and B in 15 days. They started working together, but after 4 days B fell ill and left. A continued and completed the remaining work. Later it was discovered that A was also working at only 80% efficiency throughout the task. How many days did it take to complete the entire task?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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Correct answer
9 16
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