on a pie chart of favourite colours the BLUE sector takes up 135 degrees of an angle. What percentage of people must have chosen BLUE as their favourite colour?
(Assume there is only one other colour than BLUE)

Question

on a pie chart of favourite colours the BLUE sector takes up 135 degrees of an angle. What percentage of people must have chosen BLUE as their favourite colour?
(Assume there is only one other colour than BLUE)

zepdrix · Answer

A full pie consists of 360 degrees.

So our `proportion` of people that chose blue would be 135/360.
Then changing this to a percent would give us:$$\Large \frac{135}{360}\times 100$$

ray10 · Answer

Ah I see thank you!
I had no idea initially how to do that, you just taught me that then! :D
much appreciated! @zepdrix

zepdrix · Answer

yay team \c:/