Quantitative Aptitude - Arithmetic Ability Questions

If cotA = x, then the value of x is

Of the 5 subjects, the average marks of Rakesh in first 3 Subjects was 79 and the average marks in the last 3 subjects was 86. If his marks in the third subject was 80, then what was his average marks in all the 5 subjects?

O is the circumcentre of ΔABC. If AO = 8 cm, then the length of BO is

After a discount of 34% an article is sold for Rs. 3168. What is the marked price (in Rs) of the article?

Ram lent Rs. 6,000/- to Shiva for 3 years and Rs. 8,000/- to Krishna for 5 years at the same rate of simple interest per annum. He got a total interest of Rs. 5,220 from both. Find the rate of interest per annum.

Raghunandan sells a machine for Rs 45 lakhs at a loss. Had he sold it for Rs 55 lakh, his gain would have been 9 times the former loss. Find the cost price of the machine.

What is the value of 10% of 150% of 400?

If (x – y) = 7, then what is the value of (x – 15)3 – (y – 8)3?