A walks at 4 kmph and 4 hours.after his start, B cyc1es after him at 10, kmph.How far from the' start does a catch up with A 1) 16.7 km 2) 18.6km 3) 21.5 km 4) 26.7
A walks at 4 kmph and 4 hours.after his start, B cyc1es after him at 10, kmph.How far from the' start does a catch up with A
1) 16.7 km
2) 18.6km
3) 21.5 km
4) 26.7