Problema Solution
Linda and Aaron recorded a CD together. Each sang some solos and both of them sang some duets. Aaron recorded twice as mnay duets as solos, and Linda recorded six more solos than duets, If a CD player selects one song at random, the probability that it will select a duet is 1/4. find the number of: a) solos by Aaron b) duets
Answer provided by our tutors
let solos by aaron = x
duet by aaron = 2x
solos by linda = y
duets by linda = y-6
=> 2x = y-6
=> y = 2x+6
p(duet) = 2x/(3x+y)
=> 2x/(5x+6) = 1/4
=> x = 2
solos by aaron = 2
duet by aaron and linda = 4
solo by linda = 10