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A survey of 170 families, 115 drink Coffee, 110 drink Tea and 130 drink Milk. Also, 85 drink Coffee and Milk, 75 drink Coffee and Tea, 95 drink Tea and Milk, 70 drink all the three. Find How many use Coffee and Milk but not Tea.

A survey of 170 families, 115 drink Coffee, 110 drink Tea and 130 drink Milk. Also, 85 drink Coffee and Milk, 75 drink Coffee and Tea, 95 drink Tea and Milk, 70 drink all the three. Find How many use Coffee and Milk but not Tea. Correct Answer 15

Given,

Number of families who participate in survey = 170

Number of families who drink Coffee = 115

Number of families who drink Tea = 110

Number of families who drink Milk = 130

Number of families who drink Coffee and Milk = 85

Number of families who drink Coffee and Tea = 75

Number of families who drink Tea and Milk = 95

Number of families who drink Coffee, Milk and Tea = 70

Calculation:

Number of families who drink only Milk and Tea = 95 – 70 = 25

Number of families who drink only Coffee and Milk = 85 – 70 = 15

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