What will be the greatest common factor of 96, 528, 2160, 3520?

How much percent above the cost price should a shopkeeper mark his goods so as to earn a profit of 32% after allowing a discount of 12% on the marked price? 

A drug dealer sells a tablet for 5 rupees. If he buys a tablet packet for Rs 50 and if a tablet packet contains 25 tablets, what will be his profit percentage?

The diameter of two cones is the same. If the ratio of their slant height is 5 : 4, then find the ratio of their areas. 

The zeros of the cubic polynomial are a, b and c respectively. Find ab + bc + ca =?

The average weight of 8 people increase by 2.5 kg when a new person comes in place of one of them weighting 75 kg. What is the weight of the new person?

The sides of a triangle are in the ratio of 7: 9 : 12. The difference between the lengths of largest and smallest sides is 15 cm . The length of the largest sides would be: