Mary is learning to use her new exercise tracker wristband and cell phone app. Her stride measures 2 feet, 8 inches. Which of the following is the distance she will walk if she takes 4,500 steps?
A. 4,500 feet
B. 12,000 feet
C. 12,600 feet
D. 9,360 feet

Respuesta :

Answer: B. 12,000 feet

Step-by-step explanation:

Given : The measure of Mary's stride=  2 feet, 8 inches.

We know that 1 feet =1 2 inches

Then, the measure of Mary's stride=  [tex]2+\dfrac{8}{12}\ feet[/tex]

[tex]=\dfrac{12(2)+8}{12}=\dfrac{32}{12}\ feet[/tex]

No,. of steps = 4500

Then, Distance = No. of steps x Measure of Mary's stride

=[tex]4500\times\dfrac{32}{12}\\\\=375\times32=12000\ feet[/tex]

Hence, the  distance she will walk if she takes 4,500 steps=12000 feet

Hence, the correct answer is B. 12,000 feet