Posted by Suzij on .
If a car travels for a distance of 16 km at an average speed of 50 km/h and then for a distance of 52 km at an average speed of 80 km/h, what is the total time for the journey in minutes, to the nearest minute?

maths 
MathMate,
(16/50+52/80)*60min
=(0.32+0.65)*60 min
=0.97*60 min
=58.2 min
=58 min. (to the nearest minute)