Quantitative Aptitude - Arithmetic Ability Questions

Length and breadth of a rectangle are increased by 40% and 70% respectively. What will be the percentage increase in the area of rectangle?

The length of a rectangle is increased by 25%. To maintain the same area, the breadth has to be decreased by

A piece of wire 132 cm long is bent successively in the shape of an equilateral triangle, a square and a circle. Then area will be longest in shape of

What is the value of Sin 60° + (1/2)Cosec 45°?

What will be the net discount (in percentage) for two successive discounts of 30% and 20%?

The third proportional of two numbers 4 and 28 is _______.

Three electronic devices make a beep after every 48 sec, 72 sec and 108 sec respectively. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest is

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?