The number of student in 3 classes is in the ratio 2:3:4 if 12 students are increased in each class this ratio changes to 8:11:14. The total number of students in the three classes in the beginning in the three classes in the beginning was:

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...

The surface area of hollow cylinder with radius 'r and height 'h' is measured by-

The diameter of the base of a cone is 10.5 c,. and its slant height is 10 cm. The curved surface ares is:

The three rational numbes between 3 ans 4 are:

A, B and C enter into partnership with investment in the ration of 5:7:8. If at the end of the year A's share...