When P alone does a work, he takes 25 days more than the time taken by P and Q working together to complete the work. But Q alone takes 9 days more than the time taken by P and Q working together to complete the work. In what time, P and Q together finish this work?


a. 18 days
b. 20 days
c. 25 days
d. 15 days






















ANSWER: 15 days

Explanation:
work and time

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