Question

Cheyenne ran a 6.36-kilometer race in 53 minutes. What was her speed in kilometers per hour?

Answer 1

Answer: 7.2 kilometers per hour

Step-by-step explanation:

Given:

Distance: 6.36km

Time: 53 minutes

Note: To find her speed, you need to divide the distance by the time.

Step 1: Convert it to kilometers per hour.

  6.36 kilometers             60 minutes

= -----------------------  x  ---------------------------

       53 minutes                    1 hour

     

    381. 6

= ------------

       53

=  7.2 kilometers per hour

Other way to find answer:

Step 1: Determine how many kilometers per minute

6.36 ÷ 53 = 0.12 kilometers per minute

Step 2: Multiply by 60 to find how many hours per hour (Note: 1 hour = 60 minutes)

0.12 x 60 = 7.2 kilometers per hour

Answer 2

Answer:

7.23km/h

Step-by-step explanation:

Speed = distance/time

Given

distance = 6.36km and

Time = 53minutes

Convert 53minutes to hour.

60 minutes = 1 hour

53 minutes = x hour

Cross multiply

X hour x 60 = 53

Xhour = 53/60

X = 0.88 hour

Therefore

Speed = 6.36km /0.88hr

= 7.23km/h