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Chapter 8: Problem 15

Complete. 2 wk = _______hr

Short Answer

Expert verified
336 hours

Step by step solution

01

Understand the Conversion Factor

We need to know how many hours are in a week. There are 7 days in a week, and each day has 24 hours.
02

Calculate Hours in One Week

Multiply the number of days in a week by the number of hours in a day: \[7 \text{ days} \times 24 \text{ hours/day} = 168 \text{ hours}\text{/week} \]
03

Calculate Hours in Two Weeks

Multiply the number of hours in one week by 2: \[168 \text{ hours/week} \times 2 \text{ weeks} = 336 \text{ hours} \]
04

Write the Final Answer

After calculating, we find that 2 weeks is equal to 336 hours.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

hours in a week
Understanding how many hours are in a week is crucial for this exercise. A week consists of 7 days. Each day has 24 hours. To find the total hours in one week, you multiply the number of days by the number of hours in a day:
  • 7 days
  • 24 hours per day
This calculation can be represented by: \[ 7 \text{ days} \times 24 \text{ hours/day} = 168 \text{ hours/week} \] Clearly, a week has 168 hours.
days to hours conversion
Converting days into hours is an important step when dealing with time conversions. Since each day has 24 hours, you simply need to multiply the number of days by 24 to get the total hours. Here is a simple formula:\[ \text{Total hours} = \text{Number of days} \times 24 \text{ hours/day} \] For example, to convert 2 weeks into hours, first convert the weeks to days:
  • 1 week = 7 days
  • 2 weeks = 2 \times 7 = 14 days
Then, convert those days into hours:\[14 \text{ days} \times 24 \text{ hours/day} = 336 \text{ hours} \] So, 2 weeks is equal to 336 hours.
multiplication
Multiplication is a fundamental mathematical operation used in this exercise. It involves adding a number to itself a certain number of times. For example, multiplying 7 by 24 means adding 7 to itself 24 times:\[7 \times 24 = 7 + 7 + 7 + ... + 7 \text{ (24 times)} = 168 \]Multiplication can be simplified by understanding the components:
  • Multiplicand: The number being multiplied (e.g., 7 days).
  • Multiplier: The number by which the multiplicand is multiplied (e.g., 24 hours).
To solve larger multiplications, remember to break them down into smaller steps if needed. This will help you verify your work and understand the process better. For example, to find out the total hours in two weeks:\[168 \text{ hours/week} \times 2 \text{ weeks} = 336 \text{ hours} \] This is achieved by doubling 168 hours.

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