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In a certain class, the ratio of left-handed students to right-handed students is 5:4. There are no ambidextrous students in the class: every student is either left-handed or right-handed. How many left-handed students are there?
(1) If four new right-handed students joined the class, the number of right-handed students would increase by 20%.
(2) If the number of left-handed students increases by 50%, then after such an increase, the probability that a randomly chosen student would be a right-handed student would be 8/23.
OA A
Source: Magoosh
(1) If four new right-handed students joined the class, the number of right-handed students would increase by 20%.
(2) If the number of left-handed students increases by 50%, then after such an increase, the probability that a randomly chosen student would be a right-handed student would be 8/23.
OA A
Source: Magoosh
