You are in a line. you count 34 people in front of you. each rollercoaster fits 11 people. how many rollercoaster must run before you can get on? explain.

Answer : four times

Step By Step :

If you add eleven people each time until you get number that is bigger then 35 you get that you need to add eleven four times until you reach 35 and more.

11 + 11 = 22 (Two Times)
11 + 11 + 11 = 33 (Three Times)
11 + 11 + 11 + 11 = 44 (Four Times)

Do the inverse operation