Question

Which car can travel at the slowest rate? Plz help fast

A) 300 miles in 4 hours
B) 450 miles in 6 hours
C) 750 miles in 10 hours
D) 800 miles in 12 hours

Answer 1

D) 800 miles in 12 hours

Explanation:

300/4=75

450/6=75

750/10=75

800/12=66.6666667

Answer 2

D

Explanation:

Let's find unit rate of each (number of miles traveled in 1 hour). For that we will divide the distance by time to get the unit rate.

Note:
`rate=(Distance)/(Time)`

(A)

rate =
`(300)/(4)=75` mph (miles per hour)

(B)

rate =
`(450)/(6)=75` mph

(C)

rate =
`(750)/(10)=75` mph

(D)

rate =
`(800)/(12)=66(2)/(3)` mph

As we can see, the first 3 rates are same, 75 mph, and the last one is
`66(2)/(3)` mph. So clearly, the last rate is the slowest.

D is the right answer.