# A runner runs at a pace of 8.5 minutes per mile. She wants to run 10 .0 km . For how long should she run?

### Chemistry In Focus

6th Edition
Tro + 3 others
Publisher: Cengage Learning
ISBN: 9781305084476

Chapter
Section

### Chemistry In Focus

6th Edition
Tro + 3 others
Publisher: Cengage Learning
ISBN: 9781305084476
Chapter 2, Problem 33E
Textbook Problem
1 views

## A runner runs at a pace of 8.5 minutes per mile. She wants to run 10 .0 km . For how long should she run?

Interpretation Introduction

Interpretation:

Time taken by a runner to complete a given distance is to be calculated.

Concept Introduction:

The standard unit of time is seconds(s). Time depends on the distance travelled and the speed. The mathematical representation of distance (d), speed(s) and time(t) is as follows:

The expression is as follows:

t = ds

### Explanation of Solution

Given information: Speed of the runner =8.5 mi/min

Distance to be covered by the runner =10 km

The conversion of minutes per miles to miles per minute is as follows:

minutes per miles= 1(miles per minutes)

Therefore,

8.5 minutes per miles= 18.5 miles per minutes

The conversion of kilometers(km) into miles(mi) is as follows:

1 km = 0.6214 mi

Therefore,

10 km =10km×(0

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