Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(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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Concept explainers

Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 …
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…
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Question
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Chapter 7.8, Problem 22P
To determine

Tofind:the duration Rory took to complete the work .

Expert Solution & Answer
Check Mark

Answer to Problem 22P

It took 2 hours for Rory to complete the work by himself.

Explanation of Solution

Given:

Jeff can weed the garden in 4 hours.

Brenda take same amount of time.

After one hour of working together Rory help them and finished in 12 hours.

Concept used:

Rate of the work:

Ratio of work to the time interval with changes in time rate of work will change.

  work rate=work donetime .

  work rate×time=workdone .

Calculation:

The equation where x is amount of time it took Rory to finished by himself.

  1.54+1.54+0.5x=1 .

Multiplying both sides by the L.C.D of 4x :

  1.5x+1.5x+2=4x .

Combining like terms:

  3x+2=4x .

Subtracting 3x from both the side:

  x=2 .

Hence, it took 2 hours for Rory to complete the work by himself.

Previous
Chapter 7.8, Problem 21P
Next
Chapter 7.8, Problem 23P

Chapter 7 Solutions

Algebra: Structure And Method, Book 1

Ch. 7.1 - Prob. 1OECh. 7.1 - Prob. 2OECh. 7.1 - Prob. 3OECh. 7.1 - Prob. 4OECh. 7.1 - Prob. 5OECh. 7.1 - Prob. 6OECh. 7.1 - Prob. 7OECh. 7.1 - Prob. 8OECh. 7.1 - Prob. 9OECh. 7.1 - Prob. 10OE
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Prob. 22OECh. 7.9 - Prob. 23OECh. 7.9 - Prob. 24OECh. 7.9 - Prob. 25OECh. 7.9 - Prob. 1WECh. 7.9 - Prob. 2WECh. 7.9 - Prob. 3WECh. 7.9 - Prob. 4WECh. 7.9 - Prob. 5WECh. 7.9 - Prob. 6WECh. 7.9 - Prob. 7WECh. 7.9 - Prob. 8WECh. 7.9 - Prob. 9WECh. 7.9 - Prob. 10WECh. 7.9 - Prob. 11WECh. 7.9 - Prob. 12WECh. 7.9 - Prob. 13WECh. 7.9 - Prob. 14WECh. 7.9 - Prob. 15WECh. 7.9 - Prob. 16WECh. 7.9 - Prob. 17WECh. 7.9 - Prob. 18WECh. 7.9 - Prob. 19WECh. 7.9 - Prob. 20WECh. 7.9 - Prob. 21WECh. 7.9 - Prob. 22WECh. 7.9 - Prob. 23WECh. 7.9 - Prob. 24WECh. 7.9 - Prob. 25WECh. 7.9 - Prob. 26WECh. 7.9 - Prob. 27WECh. 7.9 - Prob. 28WECh. 7.9 - Prob. 29WECh. 7.9 - Prob. 30WECh. 7.9 - Prob. 31WECh. 7.9 - Prob. 32WECh. 7.9 - Prob. 33WECh. 7.9 - Prob. 34WECh. 7.9 - Prob. 35WECh. 7.9 - Prob. 36WECh. 7.9 - Prob. 37WECh. 7.9 - Prob. 38WECh. 7.9 - Prob. 39WECh. 7.9 - Prob. 40WECh. 7.9 - Prob. 41WECh. 7.9 - Prob. 42WECh. 7.9 - Prob. 43WECh. 7.9 - Prob. 44WECh. 7.9 - Prob. 45WECh. 7.9 - Prob. 46WECh. 7.9 - Prob. 47WECh. 7.9 - Prob. 48WECh. 7.9 - Prob. 49WECh. 7.9 - Prob. 50WECh. 7.9 - Prob. 51WECh. 7.9 - Prob. 52WECh. 7.9 - Prob. 53WECh. 7.9 - Prob. 54WECh. 7.9 - Prob. 55WECh. 7.9 - Prob. 56WECh. 7.9 - Prob. 57WECh. 7.9 - Prob. 58WECh. 7.9 - Prob. 59WECh. 7.9 - Prob. 60WECh. 7.9 - Prob. 61WECh. 7.9 - Prob. 62WECh. 7.9 - Prob. 63WECh. 7.9 - Prob. 64WECh. 7.9 - Prob. 65WECh. 7.9 - Prob. 66WECh. 7.9 - Prob. 67WECh. 7.9 - Prob. 68WECh. 7.9 - Prob. 69WECh. 7.9 - Prob. 70WECh. 7.9 - Prob. 71WECh. 7.9 - Prob. 1PCh. 7.9 - Prob. 2PCh. 7.9 - Prob. 3PCh. 7.9 - Prob. 4PCh. 7.9 - Prob. 5PCh. 7.9 - Prob. 1MRECh. 7.9 - Prob. 2MRECh. 7.9 - Prob. 3MRECh. 7.9 - Prob. 4MRECh. 7.9 - Prob. 5MRECh. 7.9 - Prob. 6MRECh. 7.9 - Prob. 7MRECh. 7.9 - Prob. 8MRECh. 7.9 - Prob. 9MRECh. 7.10 - Prob. 1OECh. 7.10 - Prob. 2OECh. 7.10 - Prob. 3OECh. 7.10 - Prob. 4OECh. 7.10 - Prob. 5OECh. 7.10 - Prob. 6OECh. 7.10 - Prob. 7OECh. 7.10 - Prob. 8OECh. 7.10 - Prob. 9OECh. 7.10 - Prob. 10OECh. 7.10 - Prob. 11OECh. 7.10 - Prob. 12OECh. 7.10 - Prob. 13OECh. 7.10 - Prob. 14OECh. 7.10 - Prob. 15OECh. 7.10 - Prob. 16OECh. 7.10 - Prob. 17OECh. 7.10 - Prob. 18OECh. 7.10 - Prob. 19OECh. 7.10 - Prob. 20OECh. 7.10 - Prob. 21OECh. 7.10 - Prob. 22OECh. 7.10 - Prob. 23OECh. 7.10 - Prob. 24OECh. 7.10 - Prob. 1WECh. 7.10 - Prob. 2WECh. 7.10 - Prob. 3WECh. 7.10 - Prob. 4WECh. 7.10 - Prob. 5WECh. 7.10 - Prob. 6WECh. 7.10 - Prob. 7WECh. 7.10 - Prob. 8WECh. 7.10 - Prob. 9WECh. 7.10 - Prob. 10WECh. 7.10 - Prob. 11WECh. 7.10 - Prob. 12WECh. 7.10 - Prob. 13WECh. 7.10 - Prob. 14WECh. 7.10 - Prob. 15WECh. 7.10 - Prob. 16WECh. 7.10 - Prob. 17WECh. 7.10 - Prob. 18WECh. 7.10 - Prob. 19WECh. 7.10 - Prob. 20WECh. 7.10 - Prob. 21WECh. 7.10 - Prob. 22WECh. 7.10 - Prob. 23WECh. 7.10 - Prob. 24WECh. 7.10 - Prob. 25WECh. 7.10 - Prob. 26WECh. 7.10 - Prob. 27WECh. 7.10 - Prob. 28WECh. 7.10 - Prob. 29WECh. 7.10 - Prob. 30WECh. 7.10 - Prob. 31WECh. 7.10 - Prob. 32WECh. 7.10 - Prob. 1PCh. 7.10 - Prob. 2PCh. 7.10 - Prob. 3PCh. 7.10 - Prob. 1MRECh. 7.10 - Prob. 2MRECh. 7.10 - Prob. 3MRECh. 7.10 - Prob. 4MRECh. 7.10 - Prob. 5MRECh. 7.10 - Prob. 6MRECh. 7.10 - Prob. 7MRECh. 7.10 - Prob. 8MRECh. 7.10 - Prob. 9MRECh. 7.10 - Prob. 1STCh. 7.10 - Prob. 2STCh. 7.10 - Prob. 3STCh. 7.10 - Prob. 4STCh. 7.10 - Prob. 5STCh. 7.10 - Prob. 6STCh. 7.10 - Prob. 7STCh. 7.10 - Prob. 8STCh. 7.10 - Prob. 9STCh. 7.10 - Prob. 10STCh. 7.10 - Prob. 11STCh. 7.10 - Prob. 12STCh. 7 - Prob. 1CRCh. 7 - Prob. 2CRCh. 7 - Prob. 3CRCh. 7 - Prob. 4CRCh. 7 - Prob. 5CRCh. 7 - Prob. 6CRCh. 7 - Prob. 7CRCh. 7 - Prob. 8CRCh. 7 - Prob. 9CRCh. 7 - Prob. 10CRCh. 7 - Prob. 11CRCh. 7 - Prob. 12CRCh. 7 - Prob. 13CRCh. 7 - Prob. 14CRCh. 7 - Prob. 15CRCh. 7 - Prob. 16CRCh. 7 - Prob. 1CTCh. 7 - Prob. 2CTCh. 7 - Prob. 3CTCh. 7 - Prob. 4CTCh. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Prob. 9CTCh. 7 - Prob. 10CTCh. 7 - Prob. 11CTCh. 7 - Prob. 12CTCh. 7 - Prob. 13CTCh. 7 - Prob. 14CTCh. 7 - Prob. 15CTCh. 7 - Prob. 16CTCh. 7 - Prob. 17CTCh. 7 - Prob. 18CTCh. 7 - Prob. 19CTCh. 7 - Prob. 20CTCh. 7 - Prob. 21CTCh. 7 - Prob. 22CTCh. 7 - Prob. 23CTCh. 7 - Prob. 24CTCh. 7 - Prob. 25CTCh. 7 - Prob. 26CTCh. 7 - Prob. 27CTCh. 7 - Prob. 1CLRCh. 7 - Prob. 2CLRCh. 7 - Prob. 3CLRCh. 7 - Prob. 4CLRCh. 7 - Prob. 5CLRCh. 7 - Prob. 6CLRCh. 7 - Prob. 7CLRCh. 7 - Prob. 8CLRCh. 7 - Prob. 9CLRCh. 7 - Prob. 10CLRCh. 7 - Prob. 11CLRCh. 7 - Prob. 12CLRCh. 7 - Prob. 13CLRCh. 7 - Prob. 14CLRCh. 7 - Prob. 15CLRCh. 7 - Prob. 16CLRCh. 7 - Prob. 17CLRCh. 7 - Prob. 18CLRCh. 7 - Prob. 19CLRCh. 7 - Prob. 20CLRCh. 7 - Prob. 21CLRCh. 7 - Prob. 22CLRCh. 7 - Prob. 23CLRCh. 7 - Prob. 24CLRCh. 7 - Prob. 25CLRCh. 7 - Prob. 26CLRCh. 7 - Prob. 27CLRCh. 7 - Prob. 28CLRCh. 7 - Prob. 29CLRCh. 7 - Prob. 30CLRCh. 7 - Prob. 31CLRCh. 7 - Prob. 32CLRCh. 7 - Prob. 33CLRCh. 7 - Prob. 34CLRCh. 7 - Prob. 35CLRCh. 7 - Prob. 36CLRCh. 7 - Prob. 37CLRCh. 7 - Prob. 38CLRCh. 7 - Prob. 39CLRCh. 7 - Prob. 1MSCh. 7 - Prob. 2MSCh. 7 - Prob. 3MSCh. 7 - Prob. 4MSCh. 7 - Prob. 5MSCh. 7 - Prob. 6MSCh. 7 - Prob. 7MSCh. 7 - Prob. 8MSCh. 7 - Prob. 9MSCh. 7 - Prob. 10MSCh. 7 - Prob. 11MSCh. 7 - Prob. 12MSCh. 7 - Prob. 13MSCh. 7 - Prob. 14MSCh. 7 - Prob. 15MSCh. 7 - Prob. 16MSCh. 7 - Prob. 17MSCh. 7 - Prob. 18MSCh. 7 - Prob. 19MSCh. 7 - Prob. 20MSCh. 7 - Prob. 21MSCh. 7 - Prob. 22MSCh. 7 - Prob. 23MSCh. 7 - Prob. 24MSCh. 7 - Prob. 25MSCh. 7 - Prob. 26MSCh. 7 - Prob. 27MSCh. 7 - Prob. 28MSCh. 7 - Prob. 29MSCh. 7 - Prob. 30MSCh. 7 - Prob. 31MSCh. 7 - Prob. 32MSCh. 7 - Prob. 33MSCh. 7 - Prob. 34MSCh. 7 - Prob. 35MSCh. 7 - Prob. 36MSCh. 7 - Prob. 1MPSCh. 7 - Prob. 2MPSCh. 7 - Prob. 3MPSCh. 7 - Prob. 4MPSCh. 7 - Prob. 5MPSCh. 7 - Prob. 6MPSCh. 7 - Prob. 7MPSCh. 7 - Prob. 8MPSCh. 7 - Prob. 9MPSCh. 7 - Prob. 10MPSCh. 7 - Prob. 11MPSCh. 7 - Prob. 12MPSCh. 7 - Prob. 13MPSCh. 7 - Prob. 14MPS

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