Class 7 Exam  >  Class 7 Questions  >  If 100 workers can finish a work in 100 days.... Start Learning for Free
If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?
  • a)
    40
  • b)
    120
  • c)
    250
  • d)
    240
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If 100 workers can finish a work in 100 days. then 40 workers can fini...
∵ 100 workers finish a work in 100 days 
∴ 1 worker finish a work in 100 × 100
∴ 40 workers finish a work = 
= 250 days
View all questions of this test
Most Upvoted Answer
If 100 workers can finish a work in 100 days. then 40 workers can fini...
Solution:

Given that 100 workers can finish a work in 100 days. We need to find out how many days it will take for 40 workers to finish the same work.

Let's assume that the amount of work done by one worker in one day is W.

So, the total work is given by:
Total work = W * 100 (since 100 workers can finish the work in 100 days)

Now, we need to find out how many days it will take for 40 workers to finish the work.

Method 1: Using the concept of work and time

We know that Work = Number of workers * Time

Let's assume the number of days required for 40 workers to finish the work is D.

So, the equation becomes:
W * D = 40 * W * 100

Cancelling out the value of W from both sides, we get:
D = 40 * 100

Hence, the number of days required for 40 workers to finish the work is 4000.

Therefore, the correct answer is option C) 250.

Method 2: Using the concept of worker-days

We can also solve this problem using the concept of worker-days.

The number of worker-days required to complete the work is given by:
Worker-days = Number of workers * Number of days

For 100 workers, the number of worker-days required is:
Worker-days = 100 * 100 = 10000

Now, we need to find out the number of days required for 40 workers to complete the same amount of work.

So, the equation becomes:
40 * Number of days = 10000

Dividing both sides by 40, we get:
Number of days = 10000 / 40 = 250

Therefore, the correct answer is option C) 250.
Attention Class 7 Students!
To make sure you are not studying endlessly, EduRev has designed Class 7 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 7.
Explore Courses for Class 7 exam

Similar Class 7 Doubts

Short Q&A:Q1: Why weekly markets are cheaper than permanent shops?Ans : Permanent shops have to incur a lot of expenditure like shop rent, electricity, fees to the government etc., but a weekly market shop owner don’t have to bear these expenses. Permanent shops holder also have to pay wages to their workers but weekly market shop owner have helpers from their family members, and thus they don’t need to hire workers. And are cheaper than permanent shops.Q2: Why Neighbourhood market is preferred by the Indians?Ans : Neighbourhood markets are near our house, one can go there at any day of the week. The buyers and sellers know each other and these shops also provide goods on credits,Q3: Differentiate between shopping complexes and malls.Ans : Markets mostly in urban areas having many shops are called shopping complexes. In many urban areas there are large multi-storeyed air conditioned building with shops on different floors, knows as malls.Q4: Establish relationship between the market and the inequality?Ans : Shop owner in weekly market and in shopping complexes are different people. One is small trader with little money while other can spend lot of money. They also earn unequal amounts. Similarly buyers are also different, there are many who are not able to afford the cheapest goods while buys only branded items from shopping malls. Thus it forms an inequality amongst people.Q5: Differentiate between permanent and temporary shops.Ans : Permanent shops contains goods that are expensive in comparison to goods of temporary shops. Permanent shops store the things they sell in their shops but temporary shops owner store goods to be sold at their home. Long Q & A : Q1: What is a chain of market? Do you think that everyone gains equally in the market?Ans:A series of markets that are connected like links forms chain of market. Products passes from one market to another. Shop owner in weekly market and in shopping complexes are different people. One is small trader with little money while other can spend lot of money. They also earn unequal amounts. Similarly buyers are also different, there are many who are not able to afford the cheapest goods while buys only branded items from shopping malls. Everyone do not get equally in a market. Individual answer. Related: Short and Long Question Answers - Market Around Us?

Top Courses for Class 7

If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer?
Question Description
If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer?.
Solutions for If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 7. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free.
Here you can find the meaning of If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer?, a detailed solution for If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice If 100 workers can finish a work in 100 days. then 40 workers can finish the work in how many days?a)40b)120c)250d)240Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 7 tests.
Explore Courses for Class 7 exam

Top Courses for Class 7

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev