Question
P, Q and R can do some work in 11 days, 20 days and 55
days respectively. In how many days can the work be done, if P gets the assistance of Q and R on alternate days?Solution
Let, total work = (LCM of 11, 20, and 55) = 220 efficiency of P = 20 units Efficiency of Q = 11 units Efficiency of R = 4 units Work done by P and Q in first day = 20 + 11 = 31 Work done by P and R in second day = 20 + 4 = 24 Total work done by P, Q, and R in 2 days = 31 + 24 = 55 55-unit work done by all three in = 2 days  220-unit work done by all thee in = [2/55] × 220 = 8 days.
How many MH-60R multi-role helicopters has India contracted from the United States?
When did the IEPFA launch the “Saksham Niveshak” campaign?
Who won the Miss India Worldwide 2024 title?
Where is the BSF’s drone-mounted radar manufacturing facility located?
What was the growth rate of India’s Index of Industrial Production (IIP) in June 2025?
What was the purpose of the 'Fisheries Summer Meet 2024' organized in Madurai, Tamil Nadu?
Which notable figure was named chairperson of the Athletics Federation of India’s Athletes Commission?
The Centre for Economics and Business Research (CEBR) has predicted that India will become the third-largest economy in ________.
Who has been elected as the President of the 79th session of the United Nations General Assembly?
The Insurance Regulatory and Development Authority of India (IRDAI) has reduced the capital required by insurance companies offering policies under Pra...
Relevant for Exams:
