Quantitative Aptitude - Arithmetic Ability Questions

The ratio of present ages of Ranjini and Shahid is 5:4. After 13 years the ratio of their ages will be 6:5. What is Ranjini's present age?

Wheat costing Rs 30/kg, Rs 35/kg and a third variety of wheat are mixed in the ratio of 3 : 4 : 2. If the mixture is costs Rs 34/kg, then what will be the cost (in Rs/kg) of the third variety of wheat?

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

Three pipe P, Q and R can fill a tank in 12 minutes, 18 minutesand 24 minutes respectively. The pipe R is closed 12 minutesbefore the tank is filled. In what time the tank is full?

If 5x - 4 ≤ 2 - x and 4x + 5 > 2x - 5, then x can take which of the following values?

What is the value of (cos45° + 1/3) ?

The value of -261+(-380)-(-521)+821-(-121)

Divide 20 into two parts such that the sum of the square of the parts is 232. What is the value of the two parts?