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
The difference of marks between Physics and Chemistry is same as that between
The marks obtained in English, Physics and Social Science exceed the marks obtained in Mathematics and Chemistry by
A number increased by 275/2 and the increment is 33. The number is