Let's solve each problem step by step:
---
Problem 7:
John Henry worked long hours as a steel driver. If he worked 19 hours a day, how many hours would he work in a 7-day week? How many hours would he work in two weeks?
#### Step 1: Calculate hours in one week
- Hours per day = 19
- Days in a week = 7
\[
\text{Hours in one week} = 19 \times 7 = 133 \text{ hours}
\]
#### Step 2: Calculate hours in two weeks
- Hours in one week = 133
- Weeks = 2
\[
\text{Hours in two weeks} = 133 \times 2 = 266 \text{ hours}
\]
Answer:
- Hours in one week:
133 hours
- Hours in two weeks:
266 hours
---
Problem 8:
Each hole that John Henry drilled was about 6 inches deep. If he drilled 144 inches in one day, how many holes would he have drilled?
#### Step 1: Determine the number of holes
- Depth of each hole = 6 inches
- Total depth drilled in one day = 144 inches
\[
\text{Number of holes} = \frac{\text{Total depth drilled}}{\text{Depth of each hole}} = \frac{144}{6} = 24 \text{ holes}
\]
Answer:
- Number of holes:
24 holes
---
Problem 9:
It took three years to blast the tunnel through Big Bend Mountain. If the men worked 261 days a year, how many days in all would it have taken them to complete the tunnel?
#### Step 1: Calculate total days
- Years = 3
- Days per year = 261
\[
\text{Total days} = 3 \times 261 = 783 \text{ days}
\]
Answer:
- Total days:
783 days
---
Problem 10:
John Henry usually worked with a 14-pound sledgehammer. If each of 32 men used a sledgehammer of the same weight, what would be the total weight of their hammers?
#### Step 1: Calculate total weight
- Weight of one sledgehammer = 14 pounds
- Number of men = 32
\[
\text{Total weight} = 14 \times 32 = 448 \text{ pounds}
\]
Answer:
- Total weight:
448 pounds
---
Problem 11:
In the contest, John Henry used 25-pound sledgehammers. If he had 9 sledgehammers at that same weight, what would be the total weight of his hammers?
#### Step 1: Calculate total weight
- Weight of one sledgehammer = 25 pounds
- Number of sledgehammers = 9
\[
\text{Total weight} = 25 \times 9 = 225 \text{ pounds}
\]
Answer:
- Total weight:
225 pounds
---
Problem 12:
Because the steam-powered drill often clogged up, it could only drill 9 feet a day. How many days would it have taken the machine to drill 126 feet?
#### Step 1: Calculate number of days
- Feet drilled per day = 9
- Total feet to drill = 126
\[
\text{Number of days} = \frac{\text{Total feet}}{\text{Feet per day}} = \frac{126}{9} = 14 \text{ days}
\]
Answer:
- Number of days:
14 days
---
Final Answers:
1.
133 hours (one week), 266 hours (two weeks)
2.
24 holes
3.
783 days
4.
448 pounds
5.
225 pounds
6.
14 days
Boxed Final Answer:
\[
\boxed{133, 266, 24, 783, 448, 225, 14}
\]
Parent Tip: Review the logic above to help your child master the concept of john henry worksheet.
