Jamie conducted a survey on the food preferences of pupils at a school and discovered that 70% of the pupils like pears, 75% like oranges, 80% like bananas and 85% like apples.
What is the smallest possible percentage of pupils who like all four of these fruits?
Select one option, then click Submit.
at least 10%
at least 15%
at least 20%
at least 25%
at least 70%
Select an option, then submit.
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Senior Mathematical Challenge 2011 (2011)
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