Quantitative Aptitude - Arithmetic Ability Questions

If cos 240° = x, then value of x is

Find the value of 'a' for which x+3x+a24 is a perfect square.

For an article the profit is 170% of the cost price. If the cost price increases by 20% but the selling price remains same, then what is the new profit percentage?

The difference between the place values of 9 and 5 in the number 428693745 is

If 4r = h + r2+h2 then r: h = ? (r not equal to 0)

A trader buys 500 kgs of cotton for Rs 9,000. 10% of this cotton is spoiled due to rain. At what rate (Rs/Kg) should he sell the rest to earn 10% profit?

Working 5 hours a day, Shivam can read a book in 24 days. How many hours a day should he work so as to finish the same work in 8 days?

If (x ­- 2) (x -­ p) = x2 - ax + 6, then the value of (a -­ p) is