MathCastle
StatisticsSuperchallengeData and Displays

Data and Displays · Superchallenge problem

Survey A asked 200200 people a yes/no question; in its pie chart the "yes" slice is 108°108°. Survey B asked the same question to a different group; its "yes" slice is 144°144°. When the two surveys are pooled into one pie chart, the "yes" slice is 132°132°. How many people took survey B?