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The probability of having a winning raffle ticket is 20%. If you bought 50 tickets, how many winning tickets should you expect to have A.3 tickets B.8 tickets C.10 tickets D.20 tickets
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Apr 19, 2017
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The probability of having a winning raffle ticket is 20%. If you bought 50 tickets, how many winning tickets should you expect to have A.3 tickets B.8 tickets C.10 tickets D.20 tickets
Mathematics
high-school
AlanH
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20% can be represented as 1/5.
Therefore you're expected to win 1 ticket out of every 5 you purchase. So if you purchase 50 you can expect to win 10 tickets. Therefore the answer is C.
Jonathan Weatherhead
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Apr 24, 2017
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