Answer:
Step-by-step explanation:
1) if 30% use the bus, this set contains those that use the bus and walk, those that use the bus and ride a bicycle and also those that use all three.
Therefore, the percent of people that only ride the bus would be
30 - (12 + 5 + 2) = 30 - 19 = 11%
ii) The total number of people that were surveyed is 100%.
The number of people that don't use any alternative transportation would be
100 - (the percent that use at least, one alternative transportation).
Those that walk only is 25 - (2 + 12 + 10 = 1
Those that ride bicycle only is 20 - (5 + 2 + 10) = 3
Therefore, the percent that don't use any alternative transportation is
100 - (11 + 3 + 1 + 12 + 2 + 5 + 10)
= 100 - 44 = 56 %
