The diameters of two cylinders are in the ratio 3:2 and their volumes are equal. The ratio of their heights is
A and B together can do a piece of work in 9 days. If A does thrice the work of B in a given time, the time A alone will take to finish the work is
Thu subject in which the student obtained 135 marks is
The marks obtained in Mathematics and Chemistry exceed the marks obtained in Physics and Social Science by