Question: In a lab, the ratio of red to blue fluorescent markers is $5:4$. If there are 15 red markers, how many blue markers are present?

Fri, 17 Apr 2026 08:15:32 +0000

**In a Lab, the Ratio of Red to Blue Fluorescent Markers Is $5:4$. If There Are 15 Red Markers, How Many Blue Markers Are Present?** What happens when science meets precision? Rarely is a simple ratio more telling than when fluorescent markers are used to track molecular signals under a microscope. Right now, curiosity is rising around laboratory practices, especially in biomedical research, where accurate sample labeling and tracking are vital. If labs maintain a $5:4$ ratio of