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Intermediate Algebra

10th Edition
Jerome E. Kaufmann + 1 other
ISBN: 9781285195728

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BuyFindarrow_forward

Intermediate Algebra

10th Edition
Jerome E. Kaufmann + 1 other
ISBN: 9781285195728
Textbook Problem

For Problems 23-25, set up an equation and then solve the problem.

It takes Jodi three times as long to deliver papers as it does Jannie. Together they can deliver the papers in 15 minutes. How long would it take Jodi by herself?

To determine

To find:

The time taken by Jodi.

Explanation

Approach:

The rate of work in uniform-work rate problems can be express as.

R=QT

Here, rate of work is R, work done quantity is Q and time taken to do the Q quantity work is T.

Calculation:

Consider time required to deliver the papers by Jannie is t then time required by Jodi becomes 3t and quantity of work is one unit.

The sum of rates for each should be equal to the rate of deliver the papers when they work together.

1t+13t=115

Multiply LCD which is 15t on both sides

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