A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are seniors, juniors, and sophomores who applied. Each senior's name is placed in the lottery times; each junior's name, times; and each sophomore's name, time. What is the probability that a senior's name will be chosen?

Question

A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are  seniors,  juniors, and  sophomores who applied. Each senior's name is placed in the lottery  times; each junior's name,  times; and each sophomore's name,  time. What is the probability that a senior's name will be chosen?

jusaquikie · Answer

your numbers for seniors juniors, and sophomores, are missing

jusaquikie · Answer

but solve it like this, a = seniors names, b = juniors names, c = sophomore's names.$$ \frac{ a }{(a+b+c) } = probability of a senior wining$$