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

User Gkpo
by
3.5k points

2 Answers

3 votes

Answer: 7.2 kilometers per hour

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 รท 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

User ToDo
by
3.6k points
3 votes

Answer:

7.23km/h

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

User Gcahill
by
3.1k points