If 200% of a number is 90, then what is 80% of that number?

One side of a square is increased by 20%. What percentage will the other side have to be decreased in order to...

The value of machine is TK.6250. Its value decreases by 10% during the first year, 20% during second year and...

Having scored 98 runs in the innings, a crickter increases his average score by 4. What will be his average sc...

in a mixture of 60 liters, the ratio of milk and water 1:2 ?

Ratan sells a tape- recoder to Mizan at a loss of 10% and Mizan sells it Shihab at a loss of 20%. If Shihab pa...

Fresh grapes contain 90% water by weight while dried grapes contain 20% water by weight. What is the weight of...