Cans of wood varnish come in three sizes. Small can: A 200 ml can costs £0.56.
Medium can: A 500 ml can costs £1.32.
Large can: A 1 l can costs £2.68.

Calculate the cost of 1 l for the small and medium cans.
Give your answer in pounds to 2 dp.
Write the can that is the better value in the comments.

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.