Question

John can mow the lawn in 40 minures and Sam can mow the lawn in 60 minutes. How long will it take to mow the lawn together
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Answer 1

Step-by-step explanation:

John 1 minute work = 1/40

Sam's 1 minute work = 1/60

time taken to mop the lawn if they work together

= 1/40+1/60

= 2/120

= 60 minutes

thus, they will take 60 minutes to mop the long together.

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