Quantitative Aptitude - Arithmetic Ability Questions

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

In the following question, select the odd word from the given alternatives.

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 selling price of 39 articles is equal to the cost price of 42 articles, then what will be the profit percentage?

A  field  can  be  reaped  by  12  men  or  18  women  in  14  days.  In  how  many  days  can  8  men  and  16 women reap it?

Pradeep has done 1/4th of a job in 14 days, Saquib completes the rest of the job in 56 days. In how many days can they together complete the job?

P can make a table in 16 days while Q can make it in 20 days. Q started the work and did that work for 5 days. In how many days P can complete the remaining work?

To cover a distance of 234 km in 1.6 hours what should be the average speed of the car in meters/second?