Question
12 men take 6 days to complete a piece of work. They
worked for a period of 2 days. After that, they were joined by 4 more men. How many more days will be taken by them to complete the remaining work?Solution
12 men = 6 days Work done by 12 men in one day = 1/6 Work done by 12 men in 2 days = 1/6 × 2 = 1/3 Remaining work = 1 - 1/3 = 2/3 Now, 4 men joined them Therefore, 2/3 rd of work is done by 16 men in x days We have the formula, M1 × D1 / W1 = M2 × D2 / W2 Here, M1 = 12, D1 = 2 and W1 = 1/3 M2 = 16, D2 = x and W2 = 2/3 (12 × 2)/(1/3) = (16 × x )/(2/3 ) x = 3 days ALTERNATE SHORTCUT METHOD M1 × D1 = M2 × D2 12× 6 = 12× 2 +(12+4) × x 72 = 24 +16 x 48 = 16 x So x=3days
Which version of IP is widely used in today's networks?
In a typical Ethernet LAN, what type of cable is commonly used for wired connections?
What is the primary function of Internet Protocol (IP)?
What is the primary purpose of memory management in an operating system?
- Which one of the following algorithm design techniques is used in finding all pairs of shortest distances in a graph?
Amongst which of the following is / are the Numeric Types of Data Types?
Which type of memory can be both read from and written to by the processor?
State true/false
Trojans can sometimes acts in favour of ransomware and ask for ransom.
What is a primary key in the context of the ER model?
Which IPC mechanism provides synchronization capabilities to prevent race conditions between processes?
Relevant for Exams:
