The carpenter had bought an axe.

A carpenter had a board which measured 3 m xx 2 m . She cut out a rectangular piece of 250 cm xx 90 cm .What is the ratio of the area of cut out piece and the remaining piece ?

The retailer bought erasers at Rs 20 a dozen. He had to sell them at a loss of 10%.Find the selling price of each eraser

Roma gave a wooden board of length 150 1/4 cm to a carpenter for making a shelf. The Carpenter sawed off a piece of 40 1/5 cm from it. What is the length of the remaining piece?