Quantitative Aptitude - Arithmetic Ability Questions

The length of one side of a rhombus is 61 cm and its area is 1320 sq.cm. Find the sum of the lengths of its diagonals?

Determine the value of 1r+1s when r3+s3=0 and r+s=6 ?

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?

On selling 56 chairs, Mohan earns profit equal to the selling price of 6 chairs. What is the profit percentage?

How long does a train, 75 m long, moving at 60 km/hr take to pass a certain telegraph post?

If sin (3x ­ 20°) = cos (3y + 20°), then find the value of (x + y).

If a(x + y) = b(x - y) = 2ab, then the value of 2(x2 + y2)

Select the odd number from the given alternatives.