If w is 10% less than x, and y is 30% less than Z, then why is what percent less than xz?

A tree increases annually by 1/8 of its height. By how much will it increase after 2 years, if it stands today...

Which one of the following fractions is the smallest?

if 1/2 of the money in a certain trust was invested in stocks, 1/4 in bonds, 1/5 in a mutual fund, and the rem...

In a university, 80 percent of the students lived in hostel, and 60 percent of the hostel students are lucky t...

X sells a product to Y and makes a profit of 25%. Y sells it to Z at a loss of 20%. If Z buys it for Tk. 140,...

On selling an article for Tk. 550, a man gains 10%. What will be the selling price, if desired profit is 20%?