A and B run a 1 km race. In the first heat A gives B a start of 100 meters and beats him by 40 seconds; In the second heat A gives B a start of 20 seconds and is beaten by 300 meters. In what time (in seconds) can each run 1 kilometer?
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.