Solve the following question given below:
Question: A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. On the right side of the tube, the depth of oil is 7.00 cm. On the left side of the tube, the depth of the oil is 2.00 cm. The density of the water is 1.00 × 103 kg/m3, and the density of the vegetable oil is 9.20 × 102 kg/m3.
Obtain the difference in fluid level between the two sides of the tube.
If possible just a brief explanation how you got the answer?