Answer:
They'll need 4290 flyers.
Explanation:
In order to know how many flyers they will need for this task we need to multiply the total number of people that will march on the parade with the total number of flyers that each person is expected to hand out. So we have:
number of flyers = (number of people)*(expected flyers per person)
number of flyers = 78*55 = 4290 flyers
They'll need 4290 flyers.