Quantitative Aptitude - Arithmetic Ability Questions

If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?

If x2+1x2 = 98, then x3+1x3 = ?

If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?

The ratio of present ages of Rambha and Sarvesh is 8:5. After 7 years the ratio of their ages will be 5:4. What is Rambha's present age?

An isosceles triangle ABC has sides AB = AC. If side BA is produced to D in such a manner that AC=AD. Then what will the measure of the angle BCD?

Meghnad can do a piece of work in 45 hours. If he is joined by Jayshri, who is 50% more efficient, in what time will they together finish the work?

The ratio of curved surface area and volume of a cylinder is 1 : 7. The ratio of total surface area and volume is 187 : 770. What is the respective ratio of its base radius and height?