Quantitative Aptitude - Arithmetic Ability Questions

10% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

If the product of two numbers is 2400 and their LCM is 96 then their HCF is

If L : M = 3 : 5 and M : N = 2 : 3, then N : L = ?

a% of b + b% of a = ______

A racing car going at an average speed of 108 km/hr takes 15 minutes to complete a lap on a racing track. By how much should it increase its speed (inkm/hr) to complete the lap in 12 minutes?

Car B is running twice as fast as car A. If car A covers a distance of 90 km in 1 1/2 hrs, what is the speed of car B?

P and Q can do a project in 12 and 12 days respectively. In how many days can they complete 50% of the project if they work together?

A sum of Rs 2000 becomes Rs 3645 in 2 years at a certain rate of compound interest. What will be the sum (in Rs) after 4 years?