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.
Which error detection technique involves appending redundant bits to the data to be transmitted?
The boolean function f(x, y) = x OR (NOT(y)) is equivalent to which of the following boolean expressions?
What is the primary advantage of using blockchain technology in transactions?
Which COCOMO mode provides a more detailed estimation based on individual project characteristics?
Physical limitation of a signal is called?
What is the purpose of analyzing the complexity of an algorithm?
In a binomial distribution, if you increase the number of trials (n) while keeping the probability of success (p) constant, what happens to the distribu...
Which algorithmic design technique involves breaking down a problem into smaller subproblems and solving them recursively?
What does the "Projection" operation in relational algebra do?
Node.js is built on which JavaScript engine?
