Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

An 80 litre mixture of water and acid contains 20% acid. How much acid should be added to make the acid 60% in the new mixture?

A sum becomes Rs 8800 in 4 years at simple interest at the yearly interest rate of 25% per annum. What is the sum (in Rs)?

What is the altitude of an equilateral triangle whose side is 12 cm?

In the given figure, the length of arc BC of the given circle is 44 cm. If O is the centre of circle, then what is the radius (in cm) of the circle?

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

What is the area (in sq cm) of a rectangle if its diagonal is 25 cm and one of its sides is 24 cm?

Reflection of the point (4,-5) in the y-axis is