Quantitative Aptitude - Arithmetic Ability Questions

Shivam is 10% less efficient than Vivek. If Vivek can make a helmet in 9 days, then in how many days Shivam can complete the same work?

Calculate the simple interest if Rs. 1800 is invested for 10 years at a rate of 5% per annum.

∆DEF is right angled at E. If m∠F = 45°, then find the value of (cosecD - 1/√3).

A circle and a square have same area. The ratio of the side of the square to the radius of the circle will be:

The volume of a right circular cone, whose radius of the base is same as one-third of its altitude, and the volume of a sphere are equal. The ratio of the radius of the cone to the radius of the sphere is :

A shopkeeper marks the price of an article at Rs. 320. Find the cost price if after allowing a discount of 10%, he still gains 20% on the cost price.

The average revenues of 7 consecutive years of a company is Rs 71 lakhs. If the average of first 4 years is Rs 66 lakhs and that of last 4 years is Rs 78 lakhs. What is the revenue for the fourth year.

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?