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James can do a job in 1.5 hours. Jane can do the same job in 1 hour. How long will it take them to do the job if they work together? (BTW 30 minutes is not the answer)
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8 votes
8 votes
James can do a job in 1.5 hours. Jane can do the same job in 1 hour. How long will it take them to do the job if they work together?

(BTW 30 minutes is not the answer)

User Piyushj
by
3.0k points

1 Answer

10 votes
10 votes

Answer:

36 mins

Explanation:

90 mins , 60 mins

1/90 + 1/60. = 2/180 + 3 / 180 = 5/180

1/36

User DomAyre
by
3.1k points
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