Concept:A ratio divides a total into proportional parts. The largest share corresponds to the biggest ratio number.Explanation:The ratio is 5:3:2.The highest share is 5 parts, and it equals 40 apples.So, 1 part =540=8 apples.The smallest share has 2 parts.Smallest share =2×8=16 apples.Answer:The smallest share is 16 apples.