Quantitative Aptitude - Arithmetic Ability Questions

The ratio of incomes of P and Q is 5 : 3. Ratio of income of Q and R is 5 : 2. If one-fourth of P’s income is Rs 500 more than the R’s income, then what is the income (in Rs) of Q?

The ratio of present ages of L and N is 7 : 5. If the age of N after seven years will be 32 years, then what is the present age (in years) of L?

A train is moving at the speed of 72 km/hr. How many seconds will it take to cover a distance of 1400 m ?

Both S.I. and C.I. is calculated with a similar rate of 10% per annum on a sum of rupees. If C.I. is calculated yearly for two years, then for what period must S.I. be evaluated such that S.I. = C.I.?

A's salary is 50% more than that of B. Then B's salary is less than that of A by

The third proportional of two numbers 9 and 24 is

What is the value of (1/√2) Cot 45° + (1/√3) Cosec 60°?

If (1/x) + (1/y) + (1/z) = 0 and x + y + z = 9, then what is the value of x3 + y3 + z3 – 3xyz?