Quantitative Aptitude - Arithmetic Ability Questions

If a - b = -5 and a2+b2=73, then find ab.

What should be the average speed of a car to cover a distance of 189 km in 3.5 hours?

A can do 75% of a job in 9 days and B can do half of the job in 8 days. If they work on it together, then in how many days can they do half of the job?

A trader buys 800 kgs of tomatoes for Rs 7200. 10% tomatoes are damaged in transportaion. At what rate (Rs/Kg) should he sell the rest to earn 30% profit?

Find the LCM of 0.63, 10.5, 2.1, 4.20

The cost of levelling a circular field at 50 Paise per square metre is Rs 7700. The cost (in Rs) of putting up a fence all round it at Rs 1.20 per meter is ( Use π = 22/7)

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

Reduce 2530/1430 to lowest terms.