Question

You and some friends buy tickets to a raffle at your school. You can each buy one ticket. In total 150 tickets were sold. The probability that on of your friends win the raffle is 1/30. How many friends of yours bought tickets

Answer 1

Answer:5

Step-by-step explanation:

Given

There are total of 150 ticket

If the probability to win a raffle is $\frac{1}{30}$

$Probability =\frac{\text{Favorable outvome }}{\text{Total outcome}}$

$\frac{1}{30}=\frac{\text{no of tickets bought}}{\text{Total no of tickets}}$

$\frac{1}{30}=\frac{\text{no of tickets bought}}{150}$

no of tickets bought$=\frac{150}{30}=5$

and no of tickets bought=No of friends

Therefore there 5 persons who bought tickets