You run 100 meters in 15 seconds, 400 meters in 1 minute, and 800 meters in 2 minutes.

How long will it take you to run 1 kilometer if you continue running at the same speed? (Hint: 1 kilometer equals 1000 meters)

### 3 Answers | Add Yours

The rate this individual is running is 100m per 15 seconds (distance/time). So, in order to run 1,000m, or 1 kilometer, it would take 150 seconds (15seconds x 10). 150 seconds is equal to **2.5 minutes** (150 seconds divided by 60 seconds).

it requires 2 minutes to complete 800 m. then an another 30 seconds to finish off 200 m. so 2 min 30 seconds will be required to finish off 1km.

15 seconds = 100m

You know that 1km equals 1000m

so, 15*10 seconds= 1000m

150 seconds = 1000 metres

Change the seconds to minutes, which is 150/60=** 2.5 minutes**

I will take 2.5 min to run 1km (1000m) if continuing at same speed of 400m/min

### Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes