40 liters of 60% concentration of acid solution is added to 35 liters of 80% concentration of acid solution. What is the concentration of acid in new solution ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 ie 
.
40l : 35l
8 : 7
60% 80%
= (480 + 560) / 15 = 1040/15
=