A biker started up a trail at 8:51 a.m., rode as fast as possible, and finished at 9:13 a.m. Another biker, not familiar with the trail, took twice as long. How long was that?

1 Answer
Aug 20, 2016

#44 " minutes"# for second rider.

Explanation:

How long did the first biker take?

#8:51 rarr 9:00 rarr 9:13#
#color(white)(xx) 9 " mins" color(white)(xx) 13 min#

Total for the ride is 22 minutes.

#2 xx 22 = 44 # minutes