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.) hr
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.)
hr
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