If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?

If 3 men or 6 boys can do a piece of work in 10 days,working 7 hours a day; how many days will it take to comp...

The length of a rectangle is twice its breadth . If its length is decreased y 5 cm and breadth is increased by...

A courtyard 25 m long and 16 m broad is to be paved with bricks of dimension 20 cm by 10 cm . The total number...

The ratio between the length and the perimeter of a rectangular plot is 1 : 3 ,what is the ratio between the l...

The length of a rectangular plot is 60% more than its breadth . If the difference between the length and the b...

A tradesman sold and article at a loss of 20% . If the selling price had been increased by Tk. 100 . there wou...