Math Problem Statement
If 4 bricklayers can build a wall in 10 days, how long will it take for 5 bricklayers to build the same wall
Solution
To solve this problem, we can use the concept of "man-days," which helps us calculate the total amount of work done by the bricklayers.
Step 1: Determine the total number of bricklayer-days needed to build the wall.
Since 4 bricklayers can complete the job in 10 days, the total amount of work in terms of bricklayer-days is:
Step 2: Calculate how many days it would take for 5 bricklayers to do the same amount of work.
If 5 bricklayers are working, we can divide the total number of bricklayer-days by 5:
Final Answer:
It will take 5 bricklayers 8 days to build the same wall.
Would you like a further explanation or have any questions about this? Here are some related questions you might find interesting:
- How do you calculate the total amount of work in man-hours instead of man-days?
- What happens to the time taken if we increase the number of bricklayers to 6?
- How can we determine the number of bricklayers required to finish a job in 5 days?
- What if the wall requires twice as much work—how would the number of days change with 5 bricklayers?
- How can you apply this kind of problem-solving to more complex team-based tasks?
Tip: Always use proportional reasoning when dealing with tasks that scale with the number of workers or the time taken to complete them!
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Math Problem Analysis
Mathematical Concepts
Proportions
Work and Time
Man-Days
Formulas
Total bricklayer-days = number of bricklayers × number of days
Number of days = total bricklayer-days ÷ number of bricklayers
Theorems
Work and Time Theorem (Inverse Proportionality)
Suitable Grade Level
Grades 7-9
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