A train traveled p kms in 40 minutes and completed the remaining 200 kms of the trip in q minutes. What was its average speed, in km per hour for the entire trip?

In an essay competition, a winner gets a prize of Tk 100 and a participant who does not win gets a prize of Tk...

At 8 am two trains started traveling towards each other from stations 300 Km apart. They passed each other at...

There are 8 marbles in a box - 6 red and 2 black. If you randomly pick 2 marbles simultaneously what is the pr...

Jashim and Imran start walking from A to B at 5 and 3 km per hour respectively. Jashim reaches B and starts ba...

Babu bought two varieties of pulse, costing Tk. 50 and Tk. 60 per Kg. each, and mixed them in some ratio. He t...

3/8 of all applicants for a job are male. 3/4 of all applicants are rejected in the first round including 2/3...