Answer:
soln
Bike rider takes 17 minutes=for 12km
so, 1 minute = 12/17km
here, 1 hour and 55 minutes= 60+55minutes
=115 minutes
now, Bike rider cover in 1 hour and 55 minutes
= 12/17×115 km
=81.17km
hence that bike rider cover 81.17km in 1 hour and 55 minutes