Question
A alone can do a work in 30 days. B alone can do the
same work in 40 days. If they work on alternate days starting with A. then in how many days (correct up to two places of decimal) the work will be completed?Solution
A can do a work in 30 days B can do a work in 40 days Total work done by A & B both = LCM of 30 & 40 = 120 Efficiency of A = 120/30 = 4 Efficiency of B = 120/40 = 3 Work done by A on 1st day = 120/30 = 4 Work done by B on 2nd day = 120/40 = 3 Work done in first 2 days by A & B = 4 + 3 = 7 then, work done in (2 x 17 = 34) days by A & B = 17 x 7 = 119 ⇒ Remaining work will be done by A = (120 – 119)/4 = 1/4 day ⇒ Total time = 34 + 1/4 = 34(1/4) days ∴ The work will be done in 34(1/4) days
What is false about linked list?
Which layer of the TCP/IP model is responsible for IP addressing and routing?
Which hazard occurs when there is a conflict in accessing a shared resource, such as a register file or an ALU, in an instruction pipeline?
Which consensus mechanism is used by Bitcoin, the first blockchain-based cryptocurrency?
In dynamic programming, what does "optimal substructure" mean?
What is a "token" in lexical analysis?
Which sorting algorithm is known for its best-case time complexity of O(n) when the input is already partially sorted?
Which data visualization technique is commonly used to represent the frequency distribution of a large dataset?
An XML document is a string of ____.
Which of the following algorithm is most sensitive to outliers?
Relevant for Exams:
