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Rusty and Nancy Brauner are planting flats of spring flowers. Working alone, Rusty would take 2 hr longer than Nancy to plant the flowers. Working together, they do the job in 12 hr. How long (to the nearest tenth) would it have taken each person working alone?

Rusty: $25.0 \mathrm{hr} ;$ Nancy: $23.0 \mathrm{hr}$

Precalculus

Algebra

Chapter 11

Quadratic Equations, Inequalities, and Functions

Section 4

Equations Quadratic in Form

Introduction to Conic Sections

Equations and Inequalities

Functions

Polynomials

McMaster University

Harvey Mudd College

University of Michigan - Ann Arbor

Idaho State University

Lectures

01:43

In mathematics, a function…

03:18

04:17

Henry and Irene working to…

02:52

03:53

Two welders working togeth…

06:03

Solve each problem.Wor…

06:10

Solve each problem.Kri…

02:59

Jennifer and Boris are gra…

01:12

Gus works twice as fast as…

01:33

Solve each problem algebra…

07:53

Two painters are painting …

01:25

Solve each problem involvi…

01:32

Solve each problem. See Ex…

02:07

Solve each problem.Jul…

03:10

Sharing a Job Henry and Ir…

01:54

Solve each problem.

03:20

Write an equation for each…

02:13

Sharing a Job Betty and Ka…

00:41

Set up the equation you wo…

01:28

Betty and Karen have been …

01:29

01:36

Two pipes are connected to…

Hi. So it is given that if Henry and Irene are working together, they will take one. How? Our and 48 minutes, which is sick or go 60 plus 48 as equal. Go one, not eight minutes. So we cannot zoom. Let Irene need Why minutes? You work alone, then Hendry really need why Place 1.5 hours, which is equal to y Pless in 19 minutes. This argue one in question. So if they take one, not eight minutes. If they work together, then in one minute there will complete one day one, not eight, but off the work. And similarly, if they work alone, Irene will complete one. Do it by by a Y or one part out. Off. Why? In one minute and Henry will complete one note off way plus 90 part in one minute. So, um, if they work together, it is one out off one, not a part. So we can write that one note off y Pless. One note off way plus 90 is equal to one note off one, not eight. So if we sold this equation, we can write that y plus 90 bless y toward by why, Indu Way place nineties equal toe one out of or not or no date. So we take one right to the side. And do you don't decision limited to the side so we can write that why you do way plus 90 is equal toe one notated do do away plus 90 that is y square plus 90 ways equal to one note dating do two way plus 90 or is equal to 216 way place 97 to 0 or we can write the quarterly creationists Boy square minus 1 26. Why minus 97 to 0 equal to zero. So if we sold the situation we can get, we will get Why is he quartile 1 80 the other value of what will be negative? It is not possible or it is not acceptable So why is equal to one idea? That means Irene will take 1 80 Mainers or is equal to three hours If she worked alone and Hendry will take way plus 90 which is equal to three year was place 1 94 Would you see quarto 4.5 I was to complete if he was alone

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