Need help with a math problem

Question

It takes 14 people working 27 hours each to build a boat. Since the number of hours to build the boat varies inversely with the number of workers working it, rounded to the nearest hour, how many hours would it take to build that boat if only 5 workers were building it instead of 14 workers

Answer 1

14 do it in 27 hours. 5 is about 1/3 of 14, so it would take about 3 times as long or 81 hours. 5 is a littler more than 1/3, so slightly less than 81 hours is needed.

each person does enough in 1/2 an hour or 14/27 of the work. 5 people would do about 2.5 hours worth.

5 does 5/14 as much as 14 can do. 14/5 x 27 = 75.6 hours to build the boat with just 5 workers