Question
Worker 'A' can complete the entire task alone in 12.5
days, while worker 'B' can finish it in 25 days. If they take turns working on the task each day, with 'B' starting on the first day, how many days will it take for them to complete the work together?Solution
Let the total work be 25 units (LCM of 12.5 and 25)
Efficiency of 'A' = (25/12.5) = 2 units/day
Efficiency of 'B' = (25/25) = 1 unit/day
Work done by them in first 2 days = 1 + 2 = 3 units
Work done by them in first 16 days = 3 X 8 = 24 units
Remaining work = 25 - 24 = 1 unit
Time taken by 'B' to complete remaining work = (1/1) = 1 day
Therefore, required time = 16 + 1 = 17 days
What is the incentive for digital transactions under the PM Vishwakarma Yojana?
If there are enough coins of denomination ₹1, ₹2 and ₹5, then in how many ways can one pay ₹10?
What is the primary function of a commercial bank?
Which of the following river valley project is related to the Tons river?
Which one of the following is not a security protocol ?
In which of the following events did India win the maximum number of medals in the recently held Asian Games – 2023?
Which Indian city was earlier referred to as the Manchester of India?
Which of the following bank has launched the SimSePay for feature phone users?
Who is known as the father of Civil-Services in India?
Which of the following is not a greenhouse gas?
Relevant for Exams:
