Ritu can type a project report in 30 hours and Seema can type it in 45 hours. If they split the typing and work at the same time, in how many hours will the report be ready?

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Accepted Answer

18. Combined rate = 1/30 + 1/45 = 3/90 + 2/90 = 5/90 = 1/18 per hour, so the report is ready in 18 hours.

Ritu can type a project report in 30 hours and Seema can type it in 45 hours. If they split the typing and work at the same time, in how many hours will the report be ready?

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