Is enzyme substrate complex concentration the product of enzyme concentration and substrate concentration?

Yes

Explanation:

The enzyme substrate complex may be defined as the enzyme when interacting with the substrate at an active site and it produces a new product in the process. It is temporary molecule formed when the substrate comes in contact with the enzyme.

An enzyme is the molecule of a protein which acts like an organic catalyst and a substrate is a the molecule which interacts with the specific enzyme to form a product.

Therefore, the enzyme substrate complex concentration is the product of the substrate concentration as well as the enzyme concentration.

the answer would be   10%