Can anyone help me?
Break it down into pieces. For instance, what’s the sum of the five average ratings for airline A?
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Try to build a process flow for understanding what the question asks:
Your first hint is 5 average ratings, so you know you have to at least have the average ratings of the 3 airlines ready to use (because it says airline and not airline rating parameter)
Your next hint is the fact that the airline with the lowest score was ranked 1st by…some number of agents
Then you have the ask of fraction of travel agents, which should reveal that your answer will be something divided by total number of agents (100)
Now is when you actually move to the graph and try to spot the pie slices whose code/name starts with the airline in question, be it A or B or C.
Add the values associated with your relevant pie slices and boom, that’s your “something”
Plug it in, simplify, get the answer.
DA questions will almost always test your reasoning in an understated way by demanding a systematic, almost template-like approach to decomposing the problem.