Quantitative Aptitude - Arithmetic Ability Questions

Five men or ten women can complete a job in 20 days. In how many days can 3 men and 4 women complete it?

A mixture of 240 litres of juice and water contains 15% water. How much more water (in litres) should be added to this so that the strength of water will become 25% in the new mixture?

Mohan earns a profit of 20% on selling a jean at 15% discount on printed price. The ratio of the cost price to printed price of the jean is

If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then x2 + y2 is equal to

Find the value of '?' in 512 × 125 ÷ 15625 = 3125 × 25?

If cosθ = x2-y2x2+y2, then the value of cotθ is

From a point P on a level ground , the angle of elevation to the top of the tower is 30° . If the tower is 100m high , the distance of point P from the foot of the tower is ( Take √3 = 1.73)

What is the value of {sin (90 – x) cos [π – (x – y)]} + {cos (90 – x) sin [π – (y – x)]}?