A laboratory has 15 chemical samples, and each sample is divided into 4 equal parts for testing. If 3 samples are used up, how many total parts remain available for testing?

Wed, 06 May 2026 22:34:45 +0000

**A Laboratory Has 15 Chemical Samples—Why This Math Matters in Today’s Science and Industry Trends** Curious about how lab resources are managed in real-world testing? With increasing demand for precision in research and development, laboratories often rely on standardized sample allocation—like splitting each of 15 chemical samples into four equal testing portions. When 3 samples are already used, understanding how many parts remain available becomes both practical and informative. This breakdown explores the math confidently, addresses common inquiry, and highlights why clear resource planning shapes innovation in the U.S. scientific and industrial spaces. Understanding Sample Allocation
A single chemical sample is routinely divided into four identical portions, maximizing utility from each unit. With 15 samples, this creates 15 times 4—60 total distinct parts ready for testing. Laboratory workflows depend on such structured inventory, where efficient planning affects project timelines and results. When 3 samples are used, their four parts are no longer available. Subtracting these from the initial 60 leaves 57 intact portions ready for future testing. This straightforward accounting reflects standard lab inventory practices central to reproducible science and regulated testing environments.