Question
M, N and O can complete a task in ‘t’, 100, and ‘t
+ 20’ days respectively. All three started together, but after 15 days, N dropped out. Then, 30 days before the work finished, M also left. The work was finished in 60 days. Find the value of ‘t’.Solution
ATQ,
M worked for 30 days, N worked for 15 days and O worked for 60 days So according to question: (30/t) + (15/100) + (60/(t + 20)) = 1 → (30/t) + (60/(t+20)) = 1 – (3/20) → (30t + 600 + 60t)/(t² + 20t) = 17/20 → 17t² + 340t = 600t + 12000 → 17t² – 260t – 12000 = 0 → 17t² – 340t + 80t – 12000 = 0 → 17t(t – 20) + 80(t – 20) = 0 → (17t + 80)(t – 20) = 0 → t = 20 (valid), t = -80/17 (not valid)
An employee forgoes promotion to avoid transfer to another city. This is a type of ________
How does feedback play a role after making a decision?
How does effective communication contribute to the decision-making process?
Which of the following is not a feature of Decision-making process?
As per the behavioural theory of decision making by Herbert Simon, there are three essential stages in the act of problem solving and decision making. W...
Programmed decisions address the _________ problems.
Which of the following decision theory is concerned with how people actually make decision?
Which type of a decision would it be when an employee in a company is working out a schedule to ensure that all the sales staff arrive at the company co...
A decision taken by a committee of a Board of a company is in nature of a __________?
What does the final step, making the decision, involve?
