Question

Pablo is sure that he is the fastest boy in his 7th grade class. He can run 1000 feet in 2 minutes and 30 seconds.

A new student, Devin, thinks that he is faster! He runs 800 feet in 2 minutes.

Who is the fastest?

Answer 1

Answer:

They are both going at the same speed!

Step-by-step explanation:

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Well, we would just need to find the unit rate!

Pablo: 1000ft/2.5=400 ft

          2.5 min/2.5=1 min

Devin: 800 ft/2=400 ft

          2 min/2=1 min

So they are actually both going at the same exact speed!

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Answer 2

Answer:

Pablo is the fastest

Step-by-step explanation:

Pablo runs 1000 feet in 2 minutes 30 seconds .

Therefore Pablo’s speed is

Distance covered / time

Converting his time taken to run into seconds

1 minute = 60 secs

2 minutes = 2 x 60

= 120 + 30

= 150 secs

His speed = 1000feet / 150secs

= 6.67 feet/secs

Devlin’s speed = 800feet / 2 mins

2 mins = 120 secs

800/120

6.67 feet/ secs

The boys both have same speed running different distances.

This therefore means that Pablo is the fastest because he is running a longer distance (1000feet) with same speed Devlin uses in running a shorter distance (800feet).