
To calculate: Distance far apart between the cities.

Answer to Problem 8P
Distance between two cities is 2800 miles.
Explanation of Solution
Given information:
Plane takes 40 min longer to fly from Boston to Los Angles at
Plane returns to Los Angles at
Let
B represents Boston
LA represents Los Angles
Table for cities B and LA:
Rate | Time | Distance | |
B to LA | 525 | ||
LA to B | 600 |
It is known that
Distance between the two cities is same.
Thus,
Subtract 525t from both sides:
Divide both sides by 75:
From the table,
We have
Distance between the two cities is
Then
Thus,
The distance between two cities is 2800 miles.
Chapter 4 Solutions
Algebra: Structure And Method, Book 1
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