David W. answered • 01/04/15

I'll help you understand math!

Jose, this isn't as bad as it seems, I promise.

Angel ran 2/5 of a kilometer in 2 minutes. This means Angel ran 2 parts out of 5 in 2 minutes. Can you see how Angel ran each of the 2 parts in one minute? In that case, to run all 5 parts of the kilometer, it should take Angel 5 minutes to run one kilometer (5/5 = 1).

Jayden ran 6/5 of a kilometer in 5 minutes (2/5 x 3 = 6/5). Now, he ran 6 parts in 5 minutes. How long would it take him to run 5? We can use a proportion here.

5 minutes/6 parts = x minutes/5 parts.

Cross multiply to get 6x = 25. x = 4 1/6.

So, it takes Jayden 4 1/6 minutes, or 4 minutes and 10 seconds, to run one kilometer.

We already determined that Angel runs 1/5 of a kilometer in one minute.

Jayden runs 1/5 of his 6/5 in one minute, since one minute is 1/5 of his 5 minutes he ran. "Of" always means to multiply. 6/5 x 1/5 = 6/25. Jayden can run 6/25 of a kilometer in one minute.

Now we have to compare distance per minute. 1/5 = 5/25, which is slightly less that 6/25, so Jayden is running slightly faster.

Hope this helps!