asked 138k views
1 vote
Jerry can lay a tile floor in 3 hours, and his assistant can do the same job in 4 hours. If Jerry starts the job and his assistant joins him 1 hour later, then how long will it take to lay the floor?

1 Answer

5 votes

Answer:

6 hours

Explanation:

i am very sorry if this is wrong

answered
User Iquestionshard
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