One hundred students were asked whether they were taking psychology or biology. The responses showed that 61 were taking psychology, 18 were taking both, and 12 were taking neither. How many were taking biology?

Question

anonymous · Answer

is the answer 45 taking biology?

anonymous · Answer

i got 27

anonymous · Answer

is that confirmed correct?

anonymous · Answer

i was the one asking the question cuz i didn't know for sure

anonymous · Answer

P=taking psychology; B=taking biology

P or B = P + B - (P and B)
88 = 61 + B - 18
B=45

anonymous · Answer

there are 100 people to start

anonymous · Answer

61 are taking psycology and 12 aren't takin either so 73 aren't take biology

anonymous · Answer

27 are