Quantitative Aptitude - Arithmetic Ability Questions

Select the odd letters from the given alternatives.

A boat covers a distance of 14 km upstream and 16 km downstream in 9 hours. It covers a distance of 12 km upstream and 40 km downstream in 11hours. What is the speed (in km/hr) of the boat in still water?

A factory buys 10 machines. 2 Machine­A, 3 Machine­B and rest Machine­C. Prices of the machines are Rs 95000, Rs 60000 and Rs 50000 respectively. What is the average cost of these machines?

If curved surface area of a cylinder is 616 sq cm and height is 14 cm, find its radius?

A, B and C can complete a work in 20, 24 and 30 days respectively. All three of them starts together but after 4 days A leaves the job and B left the job 6days before the work was completed. C completed the remaining work alone. In how many days was the total work completed?

If 1+y16-74, then the value of 5y-15

Neeraj's earning was decreased by 60% and after that subsequently increased by 60%. Find the final loss % on his earnings?