Question

Thomas walks at a speed of 7km/s. He takes a 21km walk every month. How long does that walk takes?

Answer 1

See below

Step-by-step explanation:

Divide the distance he walks by the speed that he walks.

21km

-------- = 3 s

(7km/s)

When you divide the top number by a number with km/s, you would flip that ratio over.

So your units would be

km x s/km the km cancel each other out and you are left with s.

You just divide the numbers as the are. 21 / 3 = 7