Question
P, Q, and R can complete a work in 12 days. 15 days and
30 days, respectively, working alone. How soon can the work be completed if P is assisted by Q and R on alternate days?ÂSolution
Total work = 60 (LCM of 12, 15 and 30) P's efficiency = 60/12 = 5 Q's efficiency = 60/15 = 4 R's efficiency = 60/30 = 2 Pattern of work = PQ, PR, PQ, PR... Work done by PQ and PR in 2 days = (5 + 4) + (5 + 2) = 16 2 days => 16 units 2 × 3 = 6 days => 16 × 3 = 48 units remaining in 12 units done by PQ in = work/efficiency = 9/ (5 + 4) = 1 days Total time taken = 6 + 1 = 7 days Now remaining 3unit work done by PR = 3/5+2=3/7day 7+3/7 =52/7days.
In which year did the Indian Parliament pass the Citizenship Act?
What is Phishing?
Which traditional craft in the Godavari region of Andhra Pradesh received the Geographical Indications (GI) tag?
Which bank has recently partnered with the Indian Olympic Association?
In the following question, a pair of words as alternatives. Find the correct pair.
Apostate : Religion
The Indian Constitution has adopted the parliamentary form of Government from ___________.
In which year was the National Air Sports Policy launched?
Rocket works on the principle of which one of the following?
Which of the following is/are the CORRECT statement(s) regarding awards approved on the eve of independence day 2023 to Armed Forces and Central Armed P...
The first solar city in India is in which state?
