A boat sailing against a stream of river takes 6 hours to travel 24 kms while sailing with thestream it takes 4 hours to travel the same distance. What is the speed o fthe stream?

The hypotenuse of a right triangle is 2 centimeters more than longer side of the traiangle is 7 centimeters le...

A sum of miney amounts to Tk 9800 after 5 years and Tk. 12005. after 8 years at the same rate of simple intere...

The price of raw meterials had gone up by 15% labor cost has also increased from 25% of the cost of ras materi...

The number of student in 3 classes is in the ratio 2:3:4 if 12 students are increased in each class this ratio...

Two buses start from a bus terminal with speed of 20 km/h at interval of 10 minutes. What si the speed of a ma...

One third of the Faculty membes of a department are female. Sixteen of the male teachers are unmarried. While...