📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      If Rina can complete a project in 36 days by working 9

      hours a day, how many hours per day should she work to complete the project in 18 days?
      A 15 hrs Correct Answer Incorrect Answer
      B 18 hrs Correct Answer Incorrect Answer
      C 12 hrs Correct Answer Incorrect Answer
      D 24 hrs Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the efficiency of Rina be 'x' units per hour

      Therefore, total work = 9 × 36 × x = 324x units

      Let the time she should work to complete the work in 18 days be 'y' hours a day.

      ATQ;

      324x = 18 × y × x

      Or, y = 18

      Therefore, she should work for 18 hours a day.

      Alternate solution:

      Required time = (9 × 36) ÷ 18 = 18 hours

      Practice Next
      More Time and work Questions

      Relevant for Exams:

      ask-question