The percentage increase in the surface area of a cube when each side is doubled is :

In an examination, the percentage of students qualified to the number of students appeared from school A is 70%. In scho…

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What …

Population of a district is 2,96,000 out of which 1,66,000 are male. 50% of the population is literate. If 70% males are…

A dozen pairs of socks quoted at Rs. 180 are available at discount of 20%. How many pairs of socks can be bought for Rs.…

In a factory there are three types of machine M<sub>1</sub>, M<sub>2</sub> and M<sub>3<…

Aman's expense is 30% more than Vimal's and Vimal's expense is 10% less than Raman's. If the sum of their expenses is Rs…

Two numbers are in the ratio 2 : 3. If 20% of the smaller number added to 20, is equal to the sum of 10% of the larger n…