Quantitative Aptitude - Arithmetic Ability Questions

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by

Yaman sold an item at a loss of 10%. If he had sold it for Rs.57 more, he would have made a profit of 20%. What should be the selling price of the item to make a profit of 30%?

The length of one side and the diagonal of a rectangle are 20 cm and 29 cm respectively. Find the length of its other side (in cm).

A boat cover row 12 km upstream in 4 hours and can cover the same distance downstream in 3 hours. What is the speed (in km/hr) of the boat in still water?

What is the equation of the line passing through the point (1,3) and making an angle of -45° with the positive x-axis?

What is the value of cos2A/(1 + sinA)?

If a + b = 10 and ab = 24, then the value of a3 + b3 is

Which of the following quadratic equations has equal roots?