It takes Benjamin 28 minutes to mow 2 lawns. Assuming the lawns are the same size and Benjamin works at the same speed, about how long will it take him to mow 5 lawns?

A 14 min

B 60 min

C 70 min

D 84 min

2 answers

28 minutes : 2 lawns = x minutes : 5 lawns

x/5 = 28/2

solve for x
21