general math MCQ #818

A and B complete a job together in two hours. If A completes the job alone in 5 hours, how long will it take B to complete the job alone?

general math MCQ #818

  1. Question 1

    Q1. A and B complete a job together in two hours. If A completes the job alone in 5 hours, how long will it take B to complete the job alone?

    • A) Two hours
    • B) 10/3 hours (3 hours 20 minutes)
    • C) Four hours
    • D) Seven hours

    Answer: 10/3 hours (3 hours 20 minutes)

    Explanation: 1/B = 1/2 − 1/5 = 3/10, so B alone takes 10/3 hours (3 hours 20 minutes).