Answer: 10 Minutes – On average, each cat catches 1 mouse in 10 minutes. So if the rate of catches is consistent then it will still only take 10 minutes for 100 cats to catch 100 mice.

“You press on through the maze”

At a school, 70% of the students studied Maths, 75% studied English, 85% studied French and 80% studied German. What is the lowest possible percentage of students who must have studied all 4 subjects?

20%

10%

It is possible for no student to study all 4