Quantitative Aptitude - Arithmetic Ability Questions

Simple interest on a sum for six months at 5% per annum is Rs 65.5.What is the value (in Rs) of sum ?

If a + b = 3 and ab = -4, then what is the value of a3 + b3?

If 10x/3 + 5/2(2 - x/3) = 7/2, then the value of x is?

If 2secA - (1 + sinA)/cosA = x, then the value of x is

The sum of a fraction and 4 times its reciprocal is 13/3. What is the fraction?

A trader bought 10 kg of tea at Rs. 400 per kg. He sold half the quantity at 20% loss and remaining at 10% profit. What was his net profit or loss in percentage?

The ten's digit of a 2-digit number is greater than the units digit by 7. If we subtract 63 from the number, the new number obtained is a number formed by interchange of the digits. Find the number.

Ravindra walks at 6 km/hr and Riya cycles at 11 km/hr towards each other. What was the distance between them when they started if they meet after 42 minutes?