Question

A plane traveling at a constant speed flew over

Pittsburgh, Saint Louis, Albuquerque, and Phoenix on its
way from New York to San Diego. Using information
from the table, what is the constant speed?

Answer 1

1. Its constant speed is 550 miles per hour.

2. Time taken to fly from Albuquerque to Phoenix is
`(3)/(5)` hours (36 minutes).

Explanation:

Speed =
`(distance)/(time)`

a. Its speed from Pittsburgh to Saint Louis can be calculated by;

speed =
`(550)/(1)`

= 550 miles/hour

b. Its speed from Saint Louis to Albuquerque can be determined by;

42 minutes =
`(42)/(60)` hours

=
`(7)/(10)` hours

so that time taken = 1
`(7)/(10)` hours

speed =
`(935)/(1(7)/(10) )`

=
`(9350)/(17)`

= 550 miles/hour

c. From Albuquerque to Phoenix, let the time be represented by t. We have;

speed =
`(330)/(t)`

since the speed is constant, then'

550 =
`(330)/(t)`

⇒ t =
`(330)/(550)`

=
`(3)/(5)`

Thus, time taken to fly from Albuquerque to Phoenix is
`(3)/(5)` hours (36 minutes).