Aptitude

Pipe A fills a tank in 6 hours, pipe B in 8 hours. Find the time together.

20 women complete work in 16 days; 16 men complete it in 15 days. Find the ratio of one man's work to one woman's work per day.

B is thrice as efficient as C; together they finish a work in 6 days. Find B's time alone.

A and B complete a work in 8 and 12 days respectively. They start together, but A leaves after 2 days. Find total time.

6 men and 8 boys do a work in 10 days; 26 men and 48 boys do it in 2 days. Find the ratio of a man's to a boy's daily work.

A car travels 300km in 5 hours. Find its speed.

Convert 72 km/h to m/s.

Convert 25 m/s to km/h.

A train 100m long crosses a pole in 10 seconds. Find its speed in km/h.

A train 150m long crosses a 250m platform in 20 seconds. Find its speed.

Two trains 100m and 150m long run in opposite directions at 30km/h and 20km/h. Find the time to cross each other.

A man walks 5km in 1 hour. Find his speed in m/s.

A boat's speed in still water is 10 km/h, current 2 km/h. Find the downstream speed.

A boat's speed in still water is 10 km/h, current 2 km/h. Find the upstream speed.

A car covers a distance in 5 hours at 60km/h. Find the time at 75km/h.

Speeds of A and B are in ratio 3:4. In a 200m race, A takes 40 sec. Find B's time.

A train running at 60km/h crosses a standing man in 9 seconds. Find the length of the train.

Two stations are 300km apart. Trains start towards each other at 50km/h and 40km/h. Find the time to meet.

A man covers a distance at 40km/h and returns at 60km/h. Find his average speed.

A cyclist covers 15km in 45 minutes. Find the speed in km/h.

A train covers 240km at a certain speed; at 20km/h more it would take 1 hour less. Find the original speed.

A man rows 750m in 675 seconds against the current and returns in 7.5 minutes. Find his rowing speed in still water (km/h).

Speed of a boat downstream is 15km/h and upstream is 9km/h. Find the still-water speed and current speed.

A 200m train runs at 72km/h. Find the time to cross a 300m platform.

Two cars start from the same point in opposite directions at 40km/h and 60km/h. Find the distance between them after 3 hours.