Liam travels 30 mph to Jasons house and stops for 1 min (22 miles). Mia travels 15 miles at 45 mph. How much longer will it take Liam to get to the lake than Mia?

Question

Liam travels at 30 miles per hour to Jason's house (12 miles), stops for 1 minute to pick up Jason, and drives to the lake (10 miles) at the same speed. Mia travels the more direct route (15 miles) at an average speed of 45 miles per hour. How much longer will it take Liam to get to the lake than Mia?

A. 15 minutes

B. 25 minutes

C. 30 minutes

D. 45 minutes

Answer 1

d=rt

t=d/r= 15/45= 1/3 hr = 20 minutes for mia

d/r = 12/30 + 10/30 = 2/5 hr + 1/3 = 24+20 = 44 minutes

add 1 minute waiting to get 45 minutes for liam

which is 25 minutes longer than Mia's time