Eighty percent of the lights at Hotel California are on at 8 p.m. a certain evening. However, forty percent of the lights that are supposed to be off are actually on and ten percent of the lights that are supposed to be on are actually off. What percent of the lights that are on are supposed to be off?
a) 22(2/9)%
b) 16(2/3)%
c) 11(1/9)%
d) 10%
e) 5%
[spoiler]The answer is: D[/spoiler][spoiler]
I read a solution for this question that was a bit hard for me to follow. Can anyone provide any pointers on a problem like this? Thanks
a) 22(2/9)%
b) 16(2/3)%
c) 11(1/9)%
d) 10%
e) 5%
[spoiler]The answer is: D[/spoiler][spoiler]
I read a solution for this question that was a bit hard for me to follow. Can anyone provide any pointers on a problem like this? Thanks
