Practice test

Time, work and efficiency - Test Set 2

Review 5 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

5 questions

Questions and explanations

  1. Question 1

    A and B can complete a task in 40 days, B and C can complete it in 30 days while C and A can complete the same task together in 24 days. How many days will each of A, B and C take to complete the task individually?
    1. 48, 96 & 32
    2. 32, 48 & 96
    3. 60, 120 & 40
    4. 40, 120 & 60
    View explanation

    Sign In to See Explanations. Sign Up Here

  2. Question 2

    X and Y take 16 days to complete a piece of work. Y and Z can complete the same work in 24 days. X, Y and Z together can complete the same work in 12 days. How much time will be taken by X and Z to complete the same work?
    1. 12 days
    2. 10 days
    3. 14 days
    4. 16 days
    View explanation

    Sign In to See Explanations. Sign Up Here

  3. Question 3

    A can complete a task alone in 8 days, while B takes 12 days to do it by himself. Together with C it takes them 4 days to complete the work. If C and D together can complete the task in 15 days, then how many days will D need to complete the task by himself?
    1. 36 days
    2. 40 days
    3. 32 days
    4. 30 days
    View explanation

    Sign In to See Explanations. Sign Up Here

  4. Question 4

    A can do a certain work in 15 days and B can do one-third of the same work in 10 days. A and B work together for 6 days and then A leaves. B completes the remaining work in C in 8 days. A and C together can complete the original work in:
    1. 12 days
    2. 9 days
    3. 15 days
    4. 18 days
    View explanation

    Sign In to See Explanations. Sign Up Here

  5. Question 5

    A and B can complete a piece of work in 56 and 70 days respectively. They began the work together but A left after some days and B finished the remaining work in 34 days. After how many days did A leave?
    1. 16 days
    2. 9 days
    3. 12 days
    4. 15 days
    View explanation

    Sign In to See Explanations. Sign Up Here