The price of electricity has been increased by 25%. If a person wants to keep the expenditure same, then the percentage reduction in use of electricity should be :

A sum was doubled with 12 1/2% rate of simple interest, per annum. Then time taken for that sum is:

The two expenditures, which together will form an angle of 108⁰ at the centre are :

If the expenditure incurred on the printing under head A is INR 5000/-. Then the sum of expenditure incurred under head B and D is :

Each side of a square is increased by 10 %. The percentage increase of its area is :

In a college, 1/5th of the girls and 1/8th of the boys took part in a social camp. The total number of students in the college took part in the camp is :