At a certain school 25% of the students join a band, 25% play a sport and 20% both join the band and play a sport. if a randomly selected student is a member of the band, what is the probablility that the student also plays a sport?	Choose the correct option:
A) 1) 3/4 B) 2)1/5 C) 3)2/5 D) 4)1/2 E) 5)4/5
This is the way to approach the question:   25% of the students join a band =&gt; 25% of the students either only join a band or both join a band and play sports   25% of the students play sports =&gt; 25% of the students either only play sports or both play sports and join a band   If a randomly selected student is a member of the band, then probability that the student also plays a sport = percentage of cases in which the student can do both/percentage of cases in which the student can just play sports or do both   =20%/25% = 4/5   The answer is therefore (5)4/5)
<result>E</result>
At a certain school 25% of the students join a band, 25% play a sport and 20% both join the band and play a sport. if a randomly selected student is a member of the band, what is the probablility that the student also plays a sport?