- A10.5
- B28
- C12
- D9
Step-by-Step Solution
Together they do 1/14 + 1/42 = 3/42 + 1/42 = 4/42 of the report per hour, so 42/4 = 10.5 hours.
Answer: A) 10.5
Rekha can type a project report in 14 hours and Sunita can type it in 42 hours. If they split the typing and work at the same time, how many hours will the report take?
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