Effective cost price of 100 rolls of paper = (100 × 32) + 450 + (100 × 0.2) = 3200 + 450 + 20 = Rs. 3670 Selling price at 20% profit = 1.20 × 3370 = Rs. 4404 Therefore, selling price of each roll of paper = 4404/100 = Rs. 44.04
Ultra-purification of metals is achieved using:
Which method is employed to separate minor quantities of multiple dissolved solids in a solution?
Which fossil fuel is formed under earth by the decomposition of vegetable matter lying under water by anaerobic bacteria in the absence of oxygen?
_____________ has the maximum attraction force between the molecules.
Which of the following reactions is a displacement reaction?
Which element is known as the 'King of Chemicals.
What is the common chemical used in blood banks as an anticoagulant and preservative?
A substance X turns the colour of red litmus blue, and it will change methyl orange-
Which of the following gas is used to fill balloons.
Which of the following is not the Ore of Aluminium?