Sasha went to a champagne brunch and had several glasses of

Last updated: 7/16/2022

Sasha went to a champagne brunch and had several glasses of champagne. She estimated her blood alcohol level was 0.12. She knows a safe driving level for someone of her weight is 0.03. If the blood alcohol level decreases by 25% every hour, how long does she need to hang out with her friends (without drinking any more alcohol) before it is safe for her to drive?