Quantitative Aptitude - Arithmetic Ability Questions

Koushik can do a piece of work in X days and Krishnu can do the same work in Y days. If they work together, then they can do the work in

A train starts moving from a place P at 10:00 a.m. and arrives at another place Q at 5:30 p.m. on the same day. If the speed of the train is 50 km/hr, then what will be the distance (in km) covered by the train?

If x2 + ax + b, when divided by x + 3, leaves a remainder of -1 and x2 + bx + a, when divided by x - 3, leaves a remainder of 39, then a+ b = ?

The list price of an article is Rs. 900. It is available at two successive discounts of 20% and 10% . The selling price of the article is:

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔABC is 98 cm sq, what is the area (in sq cm) of quadrilateral BDEC?

If x = a + 1a, y = a - 1a ,(a>0), then the value of x4+y4-2x2y2 is

What percentage of 1 day is 18 minutes?

It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the car is: