Marianne has been collecting donations for her biscuit stall at the school summer fayre. There are some luxury gift tins of biscuits to be sold at ÂŁ5 each, normal packets at ÂŁ1 each, and mini-packs of 2 biscuits at 10p each. She tells Amy that she has received exactly 100 donations in total, with a collective value of ÂŁ100, and that her stock of ÂŁ1 packets is very low compared with the other items. Amy wants to work out how many of each item Marianne has. Show how she can do it.
