Question: in the first m games of a team ' s season , the ratio of the team ' s wins to its losses was 1 : 2 . in the subsequent n games , the ratio of the team ´ s wins to losses was 1 : 4 . if m : n = 4 : 5 , what was the ratio of the team ' s wins to its losses for all m + n games ?
A) 7 : 20
B) 9 : 23
C) 11 : 27
D) 23 : 54
E) 31 : 77
Correct answer: a
Grade: 7 | Topic: Ratios and proportions | Difficulty: Hard | Standard: 7.RP.A.3