Peter can mow the lawn in 40 mins and John can mow the lawn in 60 mins. How long will it take for them to mow the lawn together..?
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Peter=40
john=60
Total of both is=100
becoz their are 2 people so 100 is divided by 2 so its answer is 50
john=60
Total of both is=100
becoz their are 2 people so 100 is divided by 2 so its answer is 50
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