Question

Dori charges 60 customers £1 to play a game. The probability of a customer winning is 0.35 and the prize is £2. How many of the 60 customers can Dori expect to win and how much profit will Dori make?

Answer 1

21 people will win, so the profit will be £18

Explanation:

0.35 x 60 = 21

21 x 2 = 42 (the amount of money to give away to prize winners)

If 60 people enter, she has £60. Subtracting £42 in winning payouts from this leaves her with a £18 profit.