Quantitative Aptitude - Arithmetic Ability Questions

A man travelled a distance of 99 km in 9 hours. He travelled partly on foot @ 9 km/hr and partly on bicycle @ 18 km/hr. What is distance (in kms) travelled on foot?

The average of five consecutive even numbers is 40. What is the value of smallest of these numbers?

ax + 5y = 8 has slope of -4/3. What is the value of a?

The area of the square field is 196 sq.m. Its each side is

Shams invested Rs. 5000 at 10% per annum compound interest. After n years, Shams received Rs. 1655 more. Find the value of n.

P(4,2) and R(-2,0) are vertices of a rhombus PQRS. What is the equation of diagonal QS.

Two water-squash mixtures, the first having a water-to-squash ratio of 4 : 1 and the other having a ratio of 3 : 1, are blended in the ratio 1 : 2. What is the water : squash ratio in the blend?

If Shubhangi walks with a speed of 2 km/hr, then she reaches her school 5/2 minutes late but if she walks with a speed of 2.5 km/hr, then she reach 5 minutes before the scheduled time. What is the distance (in km) of her school from her house?