In a large woodland conservation area, ecologists estimate that there are 4,800 4,800\,4,800 native red squirrels and 68,000 68,000\,68,000 invasive grey squirrels.
Calculate the percentage of all squirrels in this conservation area that are native red squirrels.
Show your working and give your answer to one decimal place.
31 exam-style questions on Edexcel IGCSE Biology The organism in the environment. Each one has a worked solution and a mark scheme showing where the marks go.