Quantitative Aptitude – Time and Work
Time and Work questions are very common and very important in every competitive exams. You will definitely get one or two question from time and work chapter or questions related to this topic. So, you need to learn this chapter very carefully.
Let’s start the basic concept of this chapter.
What is Time and Work ?
The main concept of time and work is to find the time needed to finish a piece of work and similarly calculate the work done within a time period.
Let’s explain this,
Suppose a workman is building a house. He takes 5 days to build a wall of that house. So, according to the time and work concept he took 5 days to finish a piece of work.
Now if we want to find out that how much work is he done in 1 day, then we need to find the average his work. He works for 5 days. So,
In 5 days he do 1 work.
Therefore, in 1 day he do 1/5 work.
So, this is the basic concept of time and work. Now we will discuss few important formulas of time and work. These formulas will help you to solve all kind of problems in the examination.
Basic Formulas of Time and Work
Suppose a Workman can finish a piece of work in n days, then his 1 day’s work = 1/n
- Ex. A Man can finish a job in 5 days, then his 1 day’s work is 1/5.
Suppose Workman’s 1 day’s work = 1/n, then he can finish the job in n days.
- Ex. A Man do 1/7th of work in 1 day. So he needs 7 days to finish the whole work.
If a workman is twice as good as another workman, then-
- Ratio of work done by Workman 1 and Workman 2 = 2 : 1.
- Ratio of times taken by Workman 1 and Workman 2 to finish a work = 1 : 2.
We hope you can now do any kind of problem using the above rules. If you want to read more about this topic then please let us know or find a good book of of Quantitative Aptitude or simply google it. If you have anything to ask us then please let us know that, we will discuss those questions here in www.AptitudeTricks.com.