Quantitative Aptitude - Arithmetic Ability Questions

Rs 9000 is divided among P, Q and R in the ratio of 5 : 6 : 7. What is the share (in Rs) of R?

A solid cube is cut into 27 identical cubes. What is the percentage increase in the total surface area?

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

The mean of 12 observations is 15. One more observation is included and the new mean becomes 16. The 13th observation is

A person borrows some money for 8 years at a rate of simple interest. If the ratio of principal and total interest is 5 : 8, then what is the rate ( inpercentage) of interest?

Rs. 3105 is due to be divided among K, L and M in the proportion of 2/3 : 3/4 : 1/2 respectively. How much will L get?

If x = at2 and y = 2at then

If x+1x=5,then the value of x1+x+x2 is