The average weight of a class of students is 67.5 kg. The weight of the class teacher is 25% more than the average weigh…

Two successive price increases of 10% each on an article are equivalent to a single price increase of :

The ratio of the number of boys and girls in school at 8 : 12. If 50% of boys and 25% of girls are getting scholarship f…

A toy merchant announces 25% rebate in prices of balls. If one needs to have a rebate of Rs. 40, then how many balls eac…

The length of a rectangle is increased by 10% and breadth decreased by 10% Then the area of the new rectangle is :

The ratio of the number of boys to that of girls in a village is 3 : 2. If 30% of boys and 70% of girls appeared in an e…

The price of sugar per kg increased from Rs. 16 to Rs. 20. The percentage reduction in the use of sugar so that the expe…

Two vessels contain equal quantities of 40% alcohol. Sachin changed the concentration of the first vessel to 50% by addi…