This math topic focuses on advanced rates and ratios, specifically working with equivalent ratios and the concept of shrinking recipes using non-integer multiples that involve decimals. The problems entail calculating necessary amounts of one component based on a fixed ratio with another, such as determining the amount of strawberry needed for a specific amount of chocolate using various non-integer ratio values. The skills practiced include understanding and applying ratios in practical scenarios and performing calculations involving decimals to find proportional relationships.