Quantitative Aptitude - Arithmetic Ability Questions

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?

Choose the word is least like the other words in the group

In the following question, select the odd word from the given alternatives.

20% discount is offered on an item. By applying a promo code the customer wins 15% cash back. What is the effective discount?

A bus travels 720 km in 20 hours. Calculate its average speed in meters/second.

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 age of A and B is 18 years. After 3 years, C joins them and the average ages of A, B and C becomes 22 years. The age of C is ?

A discount series of 15%, 20% and 25% is equal to the single discount of?