Quantitative Aptitude - Arithmetic Ability Questions

What is the value of [1 – sin (90 – 2A)] / [1 + sin (90 + 2A)]?

A pentagonal prism has 15 edges. How many vertices does it have?

Find the greatest length which can be used to measure exactly three cloth pieces of lengths 1.26 m, 1.98 m and 1.62 m respectively.

What is the value of 53% of 7400?

A merchant changed his trade discount from 25% to 15%. This would increase selling price by

A can do a piece of work in 10 days and B can do it in 12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone ?

Six year ago Parvez’s age was same as the present age of Manish. If the present age of Parvez is one-fourth more than that of Manish's present age, then in how many years will Parvez’s age become double of Manish’s present age?

Keerthana takes 9 hrs 20 min in walking a distance and riding back to same place where she started. She could walk both ways in 11 hrs 15 min. The time taken by her to ride back both ways is