/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 7.100 Daria can weed the garden in 7 h... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 7: Q. 7.100 (page 709)

Daria can weed the garden in 7 hours, while her mother can do it in 3. How long will it take the two of them to work together?

Short Answer

Expert verified

They take 2.1 hours= 2 hours and 6 minutes to work both together.

Step by step solution

01

Given information

The time taken by the persons to work is given and the time is asked when they both work together.

02

Form the equation and solve

Use the given sentence to form the required equation.

  • As per the formula, the total time(t) taken by Daria(D) and her mother(M) both together can be determined by 1D+1M=1t...........(1).
  • Substitute the time taken by Daria and her mother into equation (1) and solve it to find the total time.

1t=1D+1M=17+13=7+37脳3=1021T=2110=2.1hours=2hours6minutes

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Simplify7y-3525-y2

Simplify the complex rational expression by using the LCD:

1x2-1y21x+1y

Simplify the complex rational expression by writing it as a division:

2x2-13x+1

Solve the proportionyy+55=38.

For the following exercises, perform the indicated operations.

4n2+32n3n+2.3n2-n-2n2+n-30梅108n2-24nn+6
See all solutions

Recommended explanations on Math Textbooks

Discrete Mathematics

Read Explanation

Calculus

Read Explanation

Statistics

Read Explanation

Mechanics Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Geometry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.