Answer:
a) 400 ft in 15 seconds
d) 1200 ft in 45 seconds
Explanation:
Given:
Danny claimed the speed of his airplane was 27 feet per second
To find:
The statements in the options that support the above claim
rate of Danny's airplane = 27 ft/sec
a) rate = 400 feet in 15 seconds
We need tio get the rate in ft/sec
in 1 second = 400/15 = 26.67
Approximately, the rate = 27 ft/sec
b) rate = 3ft in 81 seconds
in 1 second = 3/81 = 0.037 ft/sec
c) rate = 1320 ft in 60 seconds
In 1 second = 1320/60 = 22
rate = 22 ft/sec
d) 1200 ft in 45 seconds
In 1 second = 1200/45 = 26.67
Approximately, rate = 27 ft/sec
The examples below that support his claim are the 1st and last option
