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There are 12 f + 36 raffle tickets in a box, of which
5f + 15 are winning tickets.
Shaun picks a raffle ticket out of the box at random.
What is the probability that his ticket is a winning ticket?
Give your answer as a fraction in its simplest form.


There Are 12 F 36 Raffle Tickets In A Box Of Which 5f 15 Are Winning Tickets Shaun Picks A Raffle Ticket Out Of The Box At Random What Is The Probability That H class=

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Réponse :

Explications étape par étape :

bonjour

nombre de tickets dans la boîte = 12 f + 36

tickets gagnants = 5 f + 15

probabilité =

(5 f + 15) /  (12 f +36)

on factorise

5( f + 3)   /  12 ( f +3)

et on peut simplifier par (f+3)

= 5/12