Trick or Treat challenge

Question

Hey all,
The Trick or Treat challenge seems pretty straightforward — I think I’ve solved it, but the three tests that are hidden in the SoloLearn challenges are coming out wrong. I don’t know why, because I can’t see the answers. Anyone know what could be going wrong?

The challenge:

Two of the houses that you will trick or treat at will give out a dollar bill. What is the percentage chance that you will randomly draw a dollar bill from your candy bag, after you visit (x) number of houses?

Input Format
An integer (>=3) representing the total number of houses that you visited.

Output Format
A percentage value rounded up to the nearest whole number.

Sample Input
4

Sample Output
50

My answer (which works for 2/5 cases):

houses = int(input())
x = 2/(houses)*100
print("%.0f" % x)

I also tried to print(round(x)), which provides the same results.

Answer 1

to round up use math.ceil
import math and print math.ceil(x)

but to calculate x do this

x=2.0/houses*100

else, you'll do an integer division which will round down the result if it's not whole.

Answer 2

John Robotane ah! thanks so much!