Robyn's class has 22 students. Nine of the students in the class are girls. What is the ratio of boys to girls in Robyn's class?
2 answers:
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Answer:
Option A.
Step-by-step explanation:
According to triangle inequality theorem, a triangle exists if the sum of two sides is greater that third side.
Apply this theorem on each combination.
Case I:
...(1)
Case II:
...(2)
Case III:
...(3)
On combining (1), (2) and (3), we get
Therefore, the correct option is A.