Karim can do a job in 15 minutes and his brother takes twice as long to do the same job. If they work together, how long it takes to complete the job?

If 3x + 2y=8 and 2x - y =3, find the value of 4y - 3x.

The scale of a local map is 1cm to 5km. An area is represented on the map by a rectangle of dimensions 5cm x 9...

In a cash box, there are equal number of 10 paisa, 25 paisa and 50 paisa coins. If it contains Tk. 170, then w...

Mou start from home at7.20am to go to her college. If it takes mou three quaters of an hour to reach her colle...

If a tower "B" feet high casts a shadow "F" feet long, than at the same time of the day, a building "T" feet h...

A rectangular box, 10inch by 8inch by 4inch is filled with water. If all the water is to be transferrred to cu...