In Fig. P2.56 pipe (A) contains gasoline ((S G=0.7) ), pipe (B) contains oil ((S G=0.9)), and

Question:

In Fig. P2.56 pipe $A$ contains gasoline $(S G=0.7$ ), pipe $B$ contains oil $(S G=0.9)$, and the manometer fluid is mercury. Determine the new differential reading if the pressure in pipe $A$ is decreased $25 \mathrm{kPa}$, and the pressure in pipe $B$ remains constant. The initial differential reading is $0.30 \mathrm{~m}$ as shown.

Figure P2.56