Bags of flour come in 3 sizes: Small bag: A 250 g bag costs 60p.
Medium bag: A 1 kg bag costs £1.80.
Large bag: A 3 kg bag costs £5.50.
Calculate the cost of 1 kg for the small and large bags.
Give your answer in pounds to 2 dp.
Write the bag that is the better value in the comments.​

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .