PTCB PTCE Practice Test Question 90 - Ratio Concentration Math Calculation (Pharmacy Technician Certification Exam CPhT Test Prep). Question 90 from My PTCB Pharmacy Technician Certification Exam (PTCE) CPhT Full Practice Test which includes 90 practice test questions covering topics specified in PTCB's PTCE Content Outline. Full PTCB PTCE Practice Test video: https://www.youtube.com/watch?v=UD4u1RACKfQ Thanks for watching! If you find this video useful, please like, share, and subscribe. If you would like to support this channel with a donation, press the heart thanks button to give me a Super Thanks. Thanks, I really appreciate it! Check out my online course for ad-free viewing of all my videos and handouts of my slides: https://www.udemy.com/course/amanda-pharmd-pharmacy-technician-certification-exam-test-prep/?referralCode=714A8401FE8985572C7E Other videos you may find helpful: My PTCB PTCE Pharmacy Technician Test Prep Playlist:    • PTCB PTCE Pharmacy Technician CPhT Te...   My Top 200 Drugs Flashcards and Quizzes: Top 200 Drugs Flashcards with Audio: https://www.youtube.com/watch?v=0BZQGDDLA6U Top 200 Drugs Quiz #1: https://www.youtube.com/watch?v=VujeZL5-c-U Top 200 Drugs Quiz #2: https://www.youtube.com/watch?v=solo_WeS3zQ