A teacher gave his class two quizzes; 80% of the class passed the first quiz, but only 60% of the class passed both quizzes. What percent of those who passed the first quiz also passed the second quiz? (2 points)

20%

40%

60%

75%

Question

A teacher gave his class two quizzes; 80% of the class passed the first quiz, but only 60% of the class passed both quizzes. What percent of those who passed the first quiz also passed the second quiz? (2 points)
		
20%
		
40%
		
60%
		
75%

anonymous · Answer

i would say 20%

phi · Answer

one way to think about this is assume there are 100 people in the class
80 people passed the first quiz
60 people passed the both

anonymous · Answer

it is given in the statement that 60% passed both,that is the answer.|dw:1397049008519:dw|