cleaning the park

Question

Every year on Earth? Day, a group of volunteers pick up garbage at Hidden Falls Park. The time it takes to clean the beach varies inversely with the number of people picking up garbage. Last? year,
32
volunteers took
4
hours to clean the park. If
66
volunteers come to pick up garbage this? year, how long will it take to clean the? park?

Answer 1

4 · 32 = h · 66

128 = 66h

1 31/33 = h

 

Sixty-six people need one hour and about fifty-six minutes