Question:
A girl calculates that the probability of her winning the first prize in a lottery is 0.08. If 6000 tickets are sold, then how many tickets has she bought?
(a) 40
(b) 240
(c) 480
(d) 750
Solution:
(c) Given, total number of sold tickets = 6000
Let she bought x tickets.
Then, probability of her winning the first prize $=\frac{x}{6000}=0.08$ [given]
$\Rightarrow$ $x=0.08 \times 6000$
$\therefore$ $x=480$
Hence, she bought 480 tickets.
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