Quantitative Aptitude - Arithmetic Ability Questions

Arun and Amit can do a piece of work in 9 days and 12 days respectively. If they work for alternate days and Amit starts the work first, then in how many days 35/36 parts of whole work will be completed?

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

If 169 is subtracted from the square of a number, then the result obtained is 7056. What is the number?

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)

If a retailer offers a discount of 28% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?

The price of a shirt after 15% discount, is Rs.119. What was the marked price of the shirt before discount

Product of 6ab, 3b and 4a is

Coefficient of x2in (x + 9)(6 - 4x)(4x - 7) is