Question 988514
.
The cars are approaching at (100kmh+140kmh=) 240kmh.
.
400km/240kmh=1.67hrs 
.
ANSWER: The vehicles will meet in 1.67 hours.
.
The first vehicle has traveled (100kmh)(1.67hrs)=167km
The second vehicle has traveled (140kmh)(1.67hrs)=233km