Asurvey was conducted in local town on modes of transportation to work. the following circle graph shows the number of people who utilize each mode of transportation. if 320 people were surveyed, about how many of them would be expected to take a bus to work? a. 42 b. 112 c. 130 d. 82

The numbers in ur circle add up to 120so the ones that took the bus were 42...

42/120 = x / 320...42 bus riders to 120 ppl = x bus riders to 320 ppl
cross multiply
(120)(x) = (42)(320)
120x = 13440
x = 13440/120
x = 112 <===

or u can also do it this way...
42/120 = 0.35 = 35%so 35% took the bus
35% of 320 = 0.35(320) = 112 <=