A container holds 80 liters of a mixture of acid and water in the ratio 7:9. If 8 liters of acid is added to the container, what will be the new ratio of acid to water?
Show answer & explanation
Correct answer: B
Explanation
Given:
Acid : Water = 7 : 9
Total mixture = 80 L
Acid added = 8 L
Total ratio = 7 + 9 = 16
Acid = (7/16) × 80 = 35 L
Water = (9/16) × 80 = 45 L
Now 8 L of acid is added
New acid = 35 + 8 = 43 L
Water = 45 L
New ratio = 43 : 45