.A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

Question

.A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :
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Solution 1

Step 1: Find out how much work A and B can do in a day.

A can do 1/15 of the work in a day and B can do 1/20 of the work in a day.

Step 2: Add the amount of work A and B can do in a day to find out how much they can do together in a day.

(1/15) + (1/20) = 7/60 of the work in a day.

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Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
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