30% of major airline companies equip their planes with wireless internet access. 70% of major airlines offer passengers free on-board snacks. What is the greatest possible percentage of major airline companies that offer both wireless internet and free on-board snacks?

30% companies will offer both wireless internet and free on-board snacks.

Step-by-step explanation:

Percentage of major companies who equip their planes with wireless internet access = 30%

Percentage of major airlines who offer passengers free on-board snacks = 70%

Therefore, from the given information, the maximum percentage of the companies who offer both wireless internet facility as well as on-board snacks may be 30% only.