Quantitative Aptitude - Arithmetic Ability Questions

If (8x ­- 4) = (3x + 6), then the numerical value of (x + 1)3 is

In a class of 65 students there are 39 girls. The average weight of these girls is 60 Kg and average weight of the full class is 64 kgs. What is the average weight of the boys of the class?

In what ratio should tea costing Rs 300/kg be mixed with tea costing Rs 200/kg so that the cost of the mixture is Rs 225/kg?

A number is greater than thrice its reciprocal by 26/3. What is the number?

What should be the missing digit so that the number 347_547 becomes exactly divisible by 11?

If ab+ba = -1, then the value of a2b-b2a is

Shaan got a total of Rs. 912 in the denomination of equal numbers of Rs. 1, Rs. 5 and Rs. 10 coins. How many coins do Shaan posses?

There are red (A), yellow(B) and green (C) tokens in a bag. A : B :: 3 : 8, B : C :: 6 : 13. A : B : C is given by