Quantitative Aptitude - Arithmetic Ability Questions

X is 25% more efficient than Y. If Y alone can make a chair in 10 days, then X alone can make the chair in how many days?

If x - y = -9 and xy = -20, then find x2 + y2 ?

What is the slope of the line, perpendicular to the line 3x - 6y = 4?

In the given figure, AB is a diameter of the circle with center O and XY is the tangent at a point C. If ACX = 35 deg, then what is the value (in deg) of CAB?

If sin P + cosec P = 2, then the value of sin7P + cosec7P is

If on an item there is 12% discount on the marked price of Rs 10,000 but the item is sold at Rs 8,360 only then what additional discount (in %) did the customer get?

A shopkeeper by selling 21 Nike shoes, earns a profit equal to the selling price of 5 Nike shoes. His profit percentage is

An angle is smaller than its supplementary angle by 70°. What is the measure of the angle?