Post-UTME Mathematics 2016 Objective — Question 10
Question 10 of 60 from the Post-UTME Screening (Post-UTME) Mathematics 2016 Objective paper, with the correct answer and a full explanation.
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Algebra 10. Mr. A can do a particular work in 6 hours, and Mr. B can do the same work in 14 hours. How much time will it take if they do the work together?
- A. 4 hours and 6 minutes
- B. 4 hours and 12 minutesCorrect
- C. 4 hours and 18 minutes
- D. 4 hours and 24 minutes
Explanation
Using 1/t1+1/t2=1/t: 1/6+1/14=1/t gives t=4.2 hours = 4 hours 12 minutes.
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