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Guidance for solving Problem 4 on Page 75 of Math 4 Textbook
Problem:
Two water pipes start flowing into a tank. The first pipe flows at a rate of 25 liters per minute, and the second pipe flows at a rate of 15 liters per minute. After 1 hour and 15 minutes, how many liters of water have flown into the tank from both pipes combined?
Solution Methods:
* Method 1:
- Convert the time units to minutes
- Calculate the liters of water flowing into the tank every minute by adding the liters from both pipes
- To find the total liters after 1 hour and 15 minutes, multiply the time by the combined liters per minute.
* Method 2:
- Convert the time units to minutes
- Calculate the liters from the first pipe after 1 hour and 15 minutes by multiplying the time by the liters per minute
- Calculate the liters from the second pipe after 1 hour and 15 minutes by multiplying the time by the liters per minute
- Find the total liters after 1 hour and 15 minutes by adding the results obtained above.
Results - Method 1:
1 hour and 15 minutes = 75 minutes.
The combined flow rate per minute:
25 + 15 = 40 (l)
Total flow after 1 hour and 15 minutes:
40 x 75 = 3000 (l)
Result: 3000 liters of water
Results - Method 2:
1 hour and 15 minutes = 75 minutes
Flow from the first pipe after 1 hour and 15 minutes:
25 x 75 = 1875 (l)
Flow from the second pipe after 1 hour and 15 minutes:
15 x 75 = 1125 (l)
Total flow after 1 hour and 15 minutes:
1875 + 1125 = 3000 (l)
Result: 3000 liters of water
Here is the solution for Exercise 4 on Page 75 of Math 4 Textbook. Additionally, this section covers 3 more exercises: Solve Exercise 1 on Page 75 of Math 4 Textbook, Solve Exercise 2 on Page 75 of Math 4 Textbook, Solve Exercise 3 on Page 75 of Math 4 Textbook, and Solve Exercise 5 on Page 75 of Math 4 Textbook. Let's explore the guidance on solving exercises on page 75 of Math 4 to excel in 4th-grade Math!
