Quantitative Aptitude - Arithmetic Ability Questions

In a class of 55 students there are 34 girls. The average weight of these girls is 51 Kg and average weight of the full class is 55.2 kgs. What is the average weight of the boys of the class?

The cube of 997 is

The distance between two pillars is 120 metres. The height of one pillar is thrice the other. The angles of elevation of their tops from the midpoint of the line connecting their feet are complementary to each other. The height (in metres) of the taller pillar is (Use : √3 = 1.732)

While selling a watch, a shop-­keeper gives a discount of 5%. If he gives a discount of 7%, he earns Rs.15 less as profit. The marked price of the watch is

If two successive discounts of 30% and 10% are given, then what will be the ratio of marked price to selling price?

Which of the following conditions is TRUE for the two line segments AB and CD to be congruent?

The diameter of a circle is 28 cm find its area?

X is 25% more efficient than Y. If Y alone can make a chair in 10 days, then X alone can make the chair in how many days?