SSC CGL – Combined Graduate Level Examination · Question 61
A solution has acid : water = 6 : 4. If 5 L of water is added, the new ratio is 6 : 5. What was the original acid quantity?
Show answer & explanation
Answer: (D) 30L
Explanation
6k/(4k + 5) = 6/5 gives k = 5, so acid = 30 L.