Quantitative Aptitude - Arithmetic Ability Questions

P and Q can do a project in 60 and 30 days respectively. In how many days can they complete 90% of the project if they work together?

Two bottles contain acid and water in the ratio 2 : 3 and 1 : 2 respectively. These are mixed in the ratio 1 : 3. What is the ratio of acid and water in the new mixture ?

A batsman scores 98 runs in the 17th match of his career. His average runs per match increased by 2.5. What is his average before the 17th match?

The maximum value of 5+20x-4x2, when X is real number

Mr. Rajesh buys a toy for Rs. 27.50 and sells it for Rs. 28.60. Find the gain %.

The least value of tan2x + cot2x is

If θ is positive acute angle and 7cos2Ɵ + 3sin2Ɵ = 4, then the value of θ is

If 6/7th of 8/5th of a number is 192, then 3/4th of that number is _____.