Quantitative Aptitude - Arithmetic Ability Questions

If a + b = 4 and ab = -5, then what is the value of a3 + b3?

What should be the average speed of the car to cover a distance of 342 km in 1.9 hours?

A man travelled at 40 kmph. Had he increased his speed by 16 kmph, he would have covered 80 km more in the same time. Find the actual distance travelled?

Two cyclists P and Q cycle at 20 km/hr and 16 km/hr towards each other respectively. What was the distance (in kms) between them when they started if they met after 40 minutes?

Chandan travelled equal distance with speed of 3 kmph, 4 kmph and 8kmph and takes a total time of 42.5 min. Find the total distance in km.

Working 10 hours a day, Aman can complete a piece of work in 18 days. How many hours a day should he work so as to finish the work in 15 days?

Working 5 hours a day, Shivam can read a book in 24 days. How many hours a day should he work so as to finish the same work in 8 days?

When a discount of 25% is given on a box of popcorn, the profit is 25%. If the discount is 10%, then the profit is