Question

The Green Party at a large university plans to line both sides of an 18 foot long hallway with posters endorsing a candidate for state senate. Each of the posters cost of $3.95, there're 3 feet wide, and they will be 2 feet between posters. Assume the first poster on each end will be exactly even with the start of the hall. Estimate how much this will cost.

Answer 1

Since the width of each poster is 3 feet and there is 2 feet space between every 2 posters, then

We need to divide the length of the hallway by 3 + 2 = 5 feet

Since the length of the hallway is 18 feet, then

18/5 = 3 + remainder 3 because 3 x 5 = 15 feet for 3 posters and 3 spaces, then the remaining is 18 - 15 = 3 feet

Since the remaining is 3 feet and the poster wide is 3 feet, then we can add another poster

Then the number of posters is 4

Since the cost of each poster is $3.95

Then the total cost = 4 x 3.95 = $15.8

If we round the answer to the nearest dollar, then it should be $16