Quantitative Aptitude - Arithmetic Ability Questions

A machine depreciates in value each year at the rate of 10% of its previous value. However, every second year there is some maintenance work so that in that particular year, depreciation is only 5% of its previous value. If at the end of the fourth year, the value of the machine stands at Rs 1,46,205, then find the value of machine at the start of the first year.

Karan, Arjun, Preeti, Priya and Ashish are travelling in a car. Three years ago, the average age of Arjun, Preeti and Priya was 42 years. If the present age of Karan is 65 years and the present average age of all five is 50 years, then what is the present age of Ashish?

∆ABC is right angled at B. If m∠A = 45°, then find the value of (coseC + 1/√3).

In the following question, select the odd number from the given alternatives.

If xy = -18 and x2+ y2= 85, then find the value of (x + y).

Shaan got a total of Rs. 912 in the denomination of equal numbers of Rs. 1, Rs. 5 and Rs. 10 coins. How many coins do Shaan posses?

What is the difference between 0.6 and 0.6%?

If P = 350 and Q = 600, then P is how much percentage less than Q?