Porcentaje solución de problemas | Ejemplo 6

Brief explanation of a percentage application problem: "Andrea bought books that cost $31.50 including 5% tax. How much does the book cost without tax?" Within the Percentages and Ratios and Proportions course. Complete Course on Ratios and Proportions / Rule of Three:    • Razones y proporciones | Regla de tres (Cu...   _________________________________________________________________ If you want to help me keep the channel growing, you can: Subscribe: https://www.youtube.com/matematicaspr... Contribute to the channel with a donation: paypal.me/profeAlex Become a channel member: https://www.youtube.com/matematicaspr... _________________________________________________________________ Visit my website: www.MatematicasProfeAlex.com Follow me on my social media: Facebook:   / matematicasprofealex   Instagram:   / matematicasprofealex   Contact: Business and press only: [email protected] 0:00 Greeting 0:15 Explanation of the example 1:00 Solution to the example 4:45 Practice exercise