Quantitative Aptitude - Arithmetic Ability Questions

The average of 41 consecutive odd numbers is 49. What is the largest number.

To travel 612 km, an Express train takes 9 hours more than Rajdhani. If the speed of the Express train is doubled, it takes 3 hours less than Rajdhani. The speed (in km/hr) of Rajdhani is

5% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

15% of a number, when added to 30% of another, gives 24% of the sum of the two numbers. The bigger number is 4 more than the smaller one. What are the numbers?

For x > 0, what is the minimum value of  x + x+22x?

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

If a + b = 9 and a2+ b2= 61, then ab is

A and B have to type a book together containing 120 pages. A takes 9 hrs to type 36 pages and B takes 5 hrs to type 40 pages. A typed first 60 pages alone and the last 60 pages were typed by A and B together. How much time (in hours) will be taken to type the complete book?