Quantitative Aptitude - Arithmetic Ability Questions

Ehsaan is twice as good a worker as Kamal and together they finish a piece of work in 29 days. In how many days will Kamal, working alone, finish the work?

If a2b+c=b2C+a=a2a+b=1 then 11+a+11+b+11+c is

The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is

The ratio of selling price to the cost price is 13 : 17. What is the loss percentage?

A batsman makes a score of 81 runs in the 16th match and thus increases his average runs per match by 3. What is his average after the 16th match?

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?

A miner sells a diamond to a trader at a profit of 40% and the trader sells it to a customer at a profit of 25%. If the customer pays Rs 56 lakhs to buy the diamond, what had it cost the miner (in Rs lakhs)?

If 2x + (9/x) = 9, then what is the minimum value of x2+1x2 = ?