Quantitative Aptitude - Arithmetic Ability Questions

The ratio of present ages of Ratnabali and Shaukat is 8:5. After 22 years the ratio of their ages will be 10:9. At present, what is Ratnabali's age?

The average weight of P, Q and R is 71 kg. If the average weight of P and Q be 66 kg and that of Q and R be 76.5 kg, then the weight (in kg) of Q is.

On dividing a number by 47, we get 75 as quotient and 18 as remainder. What is the number?

If x+1x = 4, then what is the value of x6+1x6 ?

Rs. x invested at 8% simple interest per annum for 5 years yields the same interest as that on Rs. y invested at 7.5% simple interest per annum for 6years. Find x : y.

In a class of 50 students there are 27 girls. The average weight of these girls is 45 kg and average weight of the full class is 49.6 kgs. What is the average weight of the boys of the class?

If cos 240° = x, then value of x is

Find out the odd word/letters/number/number pair from the given alternatives.