The barrel of a fountain pen, cylindrical in shape, is 7 cm long and 5 mm in diameter. A full barrel of ink in the pen is used upon writing 3300 words on average. How many words can be written in a bottle of ink containing one-fifth of a litre?
3300 words can be written with 0.001375 L of ink
So with 1L of ink 3300/0.001375 words can be written=2400000
So with 1/5th of a litter 2400000/5 words can be written=48000