Two ships A and B 10 km apart on a line running south to north. Ship A further north is streaming west at 20 km/h and ship B is streaming north at 20 km/h. Their distance of closest approach and how long do they take to reach it ?

Two ships A and B 10 km apart on a line running south to north. Ship A

1.	Two ships A and B 10 km apart on a line running south to north. Ship A further north is streaming west at 20 km/h and ship B is streaming north at 20 km/h. Their distance of closest approach and how long do they take to reach it ?
Answer» `5sqrt(2)KM`, 15 MIN `5sqrt(2) km`, 1.5 min `5sqrt(2)km`, 0.5 min `5sqrt(2)km`, 15 sec Answer :A