In a Bangalore city, 80% of the people eat Idli, 45% eat Dosa and 25% eat Vada as breakfast. 28% eat Idli and Dosa, 15% eat Dosa and Vada, and 12% eat Vada and Idli. What is the percentage of people who eat Idli, Dosa and Vada all three as breakfast?
1
10
2
7
3
5
4
15