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Guidance for solving problem 3 on page 137 of Math 5 textbook
Problem statement:
An average worker completes 1 item in 1 hour and 8 minutes. In the first attempt, the worker completes 7 items. In the second attempt, the worker completes 8 items. Inquire about the total time taken by the worker for both attempts.
Solution Method:
- Given:
+ 1 item: 1 hour 8 minutes
+ First attempt: 7 items
+ Second attempt: 8 items
- Required: Calculate the total time taken by the person for both attempts
- Solution:
+ Step 1: Calculate the time taken for 7 items, by multiplying the time taken for 1 item by 7
+ Step 2: Calculate the time taken for 8 items, by multiplying the time taken for 1 item by 8
+ Step 3: Calculate the total time taken for both attempts, by adding the time taken for 7 items to the time taken for 8 items.
Answer
Method 1:
The time taken for the first attempt to complete 7 items is:
1 hour 8 minutes x 7 = 7 hours 56 minutes
The time taken for the second attempt to complete 8 items is:
1 hour 8 minutes x 8 = 9 hours 4 minutes
The total time taken for both attempts is:
7 hours 56 minutes + 9 hours 4 minutes = 16 hours 60 minutes
16 hours 60 minutes = 17 hours
Answer: 17 hours.
Method 2:
The total items produced in both attempts are:
7 + 8 = 15 (items)
The time taken to produce 15 items is:
1 hour 8 minutes x 15 = 15 hours 120 minutes = 17 hours
15 hours 120 minutes = 17 hours
Answer: 17 hours.
Here is the solution guide for exercise 3 on page 137 of Math 5 textbook focusing on concentrated practice. Additionally, this section includes 3 other exercises: Solution for exercise 1 on page 137 of Math 5 textbook, Solution for exercise 2 on page 137 of Math 5 textbook, and Solution for exercise 4 on page 137 of Math 5 textbook. Let's explore the Math 5 page 137 Solutions to excel in Math class.
