Question

Three students are arguing over who can run the fastest.

Answer 1

Answer:

Student-A:

$speed=\frac{1}{9}$ mile/min

Student-B:

$speed=\frac{1}{8}$ mile/min

Student-C:

$speed=\frac{1}{10}$ mile/min

Step-by-step explanation:

Student-A:

she can run 2/3 mile in six minutes

so,

total distance is $\frac{2}{3}$ miles

total time =6 min

we can use formula

speed=(total distance)/(total time)

$speed=\frac{\frac{2}{3} }{6}$

$speed=\frac{1}{9}$ mile/min

Student-B:

she can run 1/2 mile in 4 minutes

so,

total distance is $\frac{1}{2}$ miles

total time =4 min

we can use formula

speed=(total distance)/(total time)

$speed=\frac{\frac{1}{2} }{4}$

$speed=\frac{1}{8}$ mile/min

Student-C:

she can run 4/5 mile in 8 minutes

so,

total distance is $\frac{4}{5}$ miles

total time =8 min

we can use formula

speed=(total distance)/(total time)

$speed=\frac{\frac{4}{5} }{8}$

$speed=\frac{1}{10}$ mile/min