Anyesha bought 1 metre long ribbon. But to make a border of a card, she does not need such a long piece. So she cuts lapout 2/5 part of it. It is still longer for the purpose. Then she again cuts of 3/4 portion from 2/5 part of ribbon.how much she actually used for border making?

From 16frac(2)(3) m long ribbon, 3/8 part is cut off. If it is further divided into 5 equal pieces, lets find the length of each pieces.

Habib uncle has a furniture shop of next to Sarjeena's house. In his shop, there is a log of length 12frac(3)(5) m. He, cuts off 4frac(1)(5) m. of the log and keeps it apart. He divided the remaining portion of log into 3 equal parts, with 3/7 parts of one of three parts, he decided to make small wooden things. Let us calculate, what lenght of log he will use to make those small things. Firstly, let us find out, what lenght of log left when 4ꟷ1/5 m is out off.

Rajia give 2/5 part of money to Debnath and 3/10 part of money to Sunita. If she has to 180 left. Let us find how much money Rajia had at the beginning.

There are two types of fertilisers F_(1) and F_(2),F_(1) consists of 10% nitrogen and 6% phosphoric ancid and F_(2) consists of 5% nitrogen and 10% phosphoric acid. After testing the soil conditions, a farmer finds that she needs atleast 14 kg of nitrogen and 14 kg of phosphoric acid for her crop. If F_(1) costs Rs. 6/kg and F_(2) costs Rs. 5/kg determine how much of each type of fertiliser should be used so that nutrient requirements are met at a minimum cost. What is the minimum cost?

A container with a volume of 5 L holds 100 g of CO_(2) at 40^(@)C . For CO_(2) gas, a =3.59L^(2)*atm*mol^(-2) and b=4.27xx10^(-2)L*mol^(-1) . Determine the pressure of CO_(2) gas. How much does this value differ from that calculated by using ideal gas equation?