Answer R makes $7 per hour on weekdays. Explanation Given information: R works 2 hours daily on weekdays. He works 8 hours on Saturdays. He earns $2 more per hour on Saturdays than weekdays. He makes $142 per week. Calculations: Let x be the amount R makes on the weekdays. Then Hours Wage ($) Income ($) Weekdays 10 x 10x Saturdays 8 x + 2 8x + 16 We know that Weekdays earning + Saturday earning = Earnings per week Thus, 10 x + 8 x + 16 = 142 That becomes 18 x = 126 Divide both sides by 18: x = 126 18 = 7 Thus, R earns $7 per hour on the weekdays.

(REV)00 Edition

ISBN: 9780395977224

Author: Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher: McDougal Littell

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Question

Chapter 3.7, Problem 12P

To determine

To calculate: R’s earning per hour on weekdays.

Expert Solution & Answer

Answer to Problem 12P

R makes $7 per hour on weekdays.

Explanation of Solution

Given information:

R works 2 hours daily on weekdays.

He works 8 hours on Saturdays.

He earns $2 more per hour on Saturdays than weekdays.

He makes $142 per week.

Calculations:

Let x be the amount R makes on the weekdays.

Then

	Hours	Wage ($)	Income ($)
Weekdays	10	x	10x
Saturdays	8	x + 2	8x + 16

We know that

Weekdays earning + Saturday earning = Earnings per week

Thus,

10x+8x+16=142

That becomes

18x=126

Divide both sides by 18:

x=12618=7

Thus,

R earns $7 per hour on the weekdays.

Chapter 3.7, Problem 11P

Chapter 3.7, Problem 13P

Chapter 3 Solutions

Algebra: Structure And Method, Book 1

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What is a Linear Equation in One Variable?; Author: Don't Memorise;https://www.youtube.com/watch?v=lDOYdBgtnjY;License: Standard YouTube License, CC-BY

Linear Equation | Solving Linear Equations | What is Linear Equation in one variable ?; Author: Najam Academy;https://www.youtube.com/watch?v=tHm3X_Ta_iE;License: Standard YouTube License, CC-BY