Solve problem 1 on page 21 of Math 5 textbook

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Ngày cập nhật gần nhất: 15/4/2026

To complete problem 1 on page 21 of Math 5 textbook in 5 days, how many people are needed if the task takes 7 days for 10 individuals? (Equal work distribution)

Guidance on solving problem 1 on page 21 of Math 5 textbook

Problem statement: 10 individuals can complete a task in 7 days. How many people are needed to finish the same task in 5 days? (Equal work distribution)

Method of solution: To complete the task in 1 day, 70 people are needed. To finish it in 5 days, 14 people are required.

Answer: To complete the task in 1 day, 70 people are needed. To finish it in 5 days, 14 people are required.

Here is the solution for exercise 1 on page 21 of Math 5 textbook, focusing on concentrated practice. Additionally, there are two more exercises: Solve exercise 2 on page 21 Math 5 textbook and Solve exercise 3 on page 21 Math 5 textbook. Check the guide on solving exercises on page 21 Math 5 to excel in 5th-grade math!

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