Quantitative Aptitude - Arithmetic Ability Questions

Ajay can do a painting in 12 days. Amit is 70% more efficient than Ajay. What is the number of days Amit would need to finish the same painting?

If a certain amount is fully distributed among A, B & C in such a way that A receives 1/2 of the amount, B receives 1/3 of the amount and C receives ₹ 1200, then how much money would A receive

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?

A car travels a certain distance at 70 km/h and comes back at 30 km/h. Find the average speed for total journey.

If the perimeter of a semi-circle is 108 cm, then find its radius (in cm).

25% discount is offered on an item. By applying a promo code the customer wins 8% cash back. What is the effective discount?

What is the simplified value of [2/(cot A – tan A)]?

If α and β are the roots of equation x2 – 2x + 4 = 0, then what is the equation whose roots are α3/β2 and β3/α2?