Question

Aman and Bhanu, working separately, can complete a task in 32 days and 40 days, respectively. They started working together, but Aman’s efficiency decreased by 40%, while Bhanu’s efficiency increased by 25%. How much time will it take for them to complete the work together under these new conditions?

A 20 days
B 18 days
C 28 days
D 12 days
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