Question

A ranch hand herded his cattle to some grazing land. Then he began riding back to the ranch, which is due west, at 7 kilometers per hour. Simultaneously, the cows began moving away from him, too, headed due east at 2 kilometers per hour. How long did it take for the herd and the ranch hand to be 4 kilometers apart?

Answer 1

4 kilometrs

Explanation:

if you add the 2 to another 2 you get four

Answer 2

4 kilometres

Hope this helped!