Exams

The incomes of P and Q are in the ratio 4 : 7 and their expenditures are in the ratio 3 : 7. If P saves Rs 10000 and Q saves Rs 7000, then what will be the income (in Rs) of P?

The constitution of India describes India as

Which of the following is a polymer?

What is the reciprocal of a negative number?

The chief constituent of gobar gas is

Two pipes, when working one at a time, can fill a cistern in 3 hhrs and 4 hrs, resp while a third pipe can drain the cistern empty in 8 hrs. All the three pipes were opened together when the cistern was 1/12 full. How long did it take for the cistern to be completely full?

The following pie diagram gives the marks scored by a student in different subjects- English , Hindi , mathematics , science and social science in an examination . Assuming that the total marks obtained for the examination are 540 , answer the question

The subject in which the student scored 105 marks is

A student multiplied a number by 6/13 instead of 13/6. What is the percentage error in the calculation?