# The time at which Anthony and Helen pass by each other. ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071 ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 1, Problem 82RE
To determine

## To calculate: The time at which Anthony and Helen pass by each other.

Expert Solution

The time at which they pass by each other is 4:00PM

### Explanation of Solution

Given information:

Time at which Anthony leaves Kingstown= 2:00 PM

Speed of Anthony = 45 mi/h

Speed of Helen = 40 mi/h

Formula Used: Distance =Speed *Time

Calculation:

Let us set Kingston having travelled 0 miles and Quenneville as having travelled 160 miles

Let the distance travelled by Anthony = x

Let the distance travelled by Helen= y

x+ y = 160

Let Anthony’s time = t

Then Helen’s time = t − 0.25

45t +40t 10 = 160

t=1.75

i.e 1 hour and 45 minutes

Since,

+ y = 160

45t +40t 10 = 160

t=1.75

i.e 1 hour and 45 minutes

2:15+1:45=4PM

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