Quantitative Aptitude - Arithmetic Ability Questions

If a+1a2 = 3, then the value of a18+ a12+a6 + 1 is

Raghavendra sells a machine for Rs 43 lakhs at a loss. Had he sold it for Rs 52 lakh, his gain would have been 5 times the former loss. Find the cost price of the machine.

A shopkeeper increases the price of an object by 40% and then sells it at 25% discount on the marked price. If the selling price of such an object be Rs. 2100, its cost price for the shopkeeper was ?

A person bought an item for Rs. 1500 and sold it at a profit of 12%. What was the selling price of the item?

The numbers x, y, z are respectively proportional to 2, 3, 5 and the sum of x, y and z is 80. If the number z is given by the equation z = ax­-8, then a is

Select the odd word/letters/number/number pair from the given alternatives.

If in a triangle ABC, Sin A = Cos B then the value of Cos C is

If 5x - ­5(3x ­- 2) < 4x -­ 1 < 2 + 2x, then x can take which of the following values?