Well, You would divide 5 into 6 to get 0.8333. The unicorn travels 0.8333 in one second. Which is your answer.
And to check your answer you would then you would multiply 0.8333 by 6 to get 4.9998, which is rounded to 5. Great, you did it, and your finished, good luck!
He is incorrect because 0.9 is equal to 0.90 which is greater than 0.74 because 9 is greater than 7
12 x 46 = 552
5 x 380 = 1900
552 x 3.44 = 1900
You will need 4 Cases
Well it seems if you round you would get 1.81 try it
Try looking at this and see if it helps http://openstudy.com/updates/580662f4e4b0d88e39fc9a0e