ExplanationStart by computing the sums of the average ratings using the table:

Category | A | B | C |

Convenience | 5.1 | 8.0 | 4.3 |

Friendliness | 5.0 | 5.5 | 5.4 |

Price | 5.0 | 6.4 | 3.5 |

Promptness | 6.5 | 6.9 | 4.1 |

Reliability | 7.8 | 7.5 | 4.9 |

Total: | 29.4 | 34.3 | 22.2 |

The airline with the least sum is C (22.2)

Now look at the pie graph to see how many travel agents ranked Airline C first. The bottom left quadrant of the circle has 20 agents rating CAB, meaning C was first, A was second and B was third. Above this, 2 agents rated CBA, meaning C was first, B was second, and A was third. So in all 22 agents (20 + 2) rated C first.

Now determine the fraction: 22 travel agents out of 100 total rated C first,

so 22/100.
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Sandy

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