aptitude

If u > t, r > q, s > t, and t > r, which of the following must be true?
I. u > s
II. s > q
III. u > r

Ten years ago, P was half of Q in age. If the ratio of their present ages is 3:4, what will be the total of their present ages?

A towel, when bleached, lost 20% of its length and 10% of its breadth. What is the percentage of decrease in area?

What is the percentage increase in the area of a rectangle, if each of its sides is increased by 20%?