Quantitative Aptitude - Arithmetic Ability Questions

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.

The ratio of present ages of Rangitha and Shaheen is 6:5. After 12 years the ratio of their ages will be 7:6. What is Rangitha's present age?

2 ­- (cosA + sinA)2 is equal to

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

If x2+5x+6 = 0, then the value of 2xx2-7x+6 is

What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(-4, 0) and C(3, -4)?

What is the value of [(sin 59° cos 31° + cos 59° sin 31° )÷(cos 20° cos 25° – sin 20° sin 25° )]?

If (-1/2) * ( x - 5) + 3 = -5/2, then what is the value of x?