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

Explanation:

Given

There are total of 150 ticket

If the probability to win a raffle is
`(1)/(30)`

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

`(1)/(30)=\frac{\text{no of tickets bought}}{\text{Total no of tickets}}`

`(1)/(30)=\frac{\text{no of tickets bought}}{150}`

no of tickets bought
`=(150)/(30)=5`

and no of tickets bought=No of friends

Therefore there 5 persons who bought tickets