Vegetable oil has the density of .92 g/ml and honey has the density of 1.42 g/ml. which liquid will float?

If you are saying float in water, than it is vegetable oil, as it has a lower density, in other ways lighter than water, so it will float if it is poured onto water. Honey has a higher density than water and way higher density than vegetable oil, therefore being heavier and more dense it will go down to the bottom.

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

You would do 1500/4 and the answer is 375