Answer: There is 12.6 pounds of ingredient B present.
Explanation:
Since we have given that
Ratio of ingredients A, B and C = 2:3:5
Weight of ingredient A = 2x
Weight of ingredient B = 3x
Weight of ingredient C = 5x
Total net weight = 42 pounds
According to question, we get that

So, Weight of ingredient B is given by

Hence, there is 12.6 pounds of ingredient B present.