Quantitative Aptitude - Arithmetic Ability Questions

An angle is smaller than its supplementary angle by 50°. What is the measure of the angle?

To go a distance of 40 km upstream a rower takes 8 hours while it takes her only 5 hours to row the same distance downstream. What was the rower's speed in still water?

If a : b is 32 : 35 and b : c is 21 : 32, then a : c is?

Robin can do a work in 10 hours. Pradeep and Robin together can do the same work in 4 hours. Pradeep and Nitin together can do the samework in 5 hours. In how many hours Nitin alone can complete the same work?

A shopkeeper by selling 22 Skechers shoes, earns a profit equal to the selling price of 6 Skechers shoes. His profit percentage is:

A number is greater than five times its reciprocal by 19/2. Find the number.

If x = 1.1, then what is the value of 4x2 -4x + 1 ?

What is the value of Tan 45° + 4/√3 Sec 60°?