Answer:
Step-by-step explanation:
76.7 liters
You have ...
C1×V1 = C2×V2
so ...
V2 = V1×(C1/C2) = (115 L)×(14/21) = 76 2/3 L
V2 ≈ 76.7 L
4
4 - 2 = 4 + -2 = -2 + 4