Incorrect
Explanation
13 : 3 = 4.333333. And since one can't go anywhere 0.333333 times, Mike will need to take 5 trips to the store to get all the water he needs.
Solve this puzzle
Tom was on the way to the park. He met a man with 7 wives and each of them was with 7 kids. So, in total, how many were going to the park?
49 50 1 2