M7MBA wrote:Frieda walks 6 feet per second, a pace which is 1/3 as fast as Evita's pace. If Evita's pace is twice as fast as Pablo's then how many feet does Pablo walk in an hour?
A. 129,600
B. 64,800
C. 32,400
D. 3,600
E. 540
Since Frieda's rate is 1/3 Evita's rate, Evita's rate is 3 times Frieda's rate:
3*6 = 18 feet per second.
Since Evita's rate is twice Pablo's rate, Pablo's rate is 1/2 Evita's rate:
(1/2)(18) = 9 feet per second.
How many feet does Pablo walk in an hour?
Since Pablo's rate is 9 feet per second, and 1 hour is the equivalent of 3600 seconds, we get:
Pablo's distance = rt = (9 feet per second)(3600 seconds) = 32,400 feet.
The correct answer is
C.
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