Question

Eight hundred people in Dallas were surveyed about how they get to work. The results are displayed in the graph below.

How many people surveyed take public transportation or bike to work?
A. 240
B. 144
C. 168
D. 304

Answer 1

Answer is A. 240

P(A or B) = P(A) + P(B)

P(A) = people who take public transport
- which is 17%

P(B) = people who bike to work
- which is 13

P(A or B) = 17 + 13 = 30

30% of 800 is 240

30/100 x 800 - reduce common factors
30 x 8
= 240