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

Sagot :

Answer:

See below

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