Quantitative Aptitude - Arithmetic Ability Questions

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is

A vendor buys bananas at 4 for Rs 3 and sells at 3 for Rs 4. What will be the result?

To travel 660 km, an Express train takes 10 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 7 hours less than Rajdhani. The speed of Rajdhani is

The average weight of 10 parcels is 1.7 kg. Addition of another new parcel reduces the average weight by 60 gram. What is the weight , in kg, of the new parcel?

What is the measure of the central angle of the sector whose area is 462 sq cm and radius of the circle is 21 cm?

10% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

If (4x -­ 5) = (3x ­- 1), then the numerical value of (x + 4)2

If x = 1/(√2+1) then the value of x2 + 2x - 1 is