Question

Amy played one game of snooker and one game of billiards on a number of Fridays. She won at both snooker and billiards on 21 Fridays. (c) Work out an estimate for the number of Fridays on which Amy did not win either game​

Answer 1

winning both= 3/4 x 1/3 = 3/12 losing both= 1/4x2/3= 2/12 21/3= 7 Fridays= 1/12 7x2= 14 Fridays = 2/12 = losing both

Explanation:

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