Answer:

Kg
Explanation:
Given
Body mass of rhinoceros
Kg
Blood mass of rhinoceros 
It is also given that blood mass is proportional to the body mass of the species.
Thus, if B represents the body mass and b represents the blood mass the relation between the two can be represented as
∝ 
On introducing a proportionality constant "k" , the relation becomes

The value of proportionality constant "k" can be determined by substituting the given values of B and b in above relation -

Thus the relation becomes

Part A
estimate the blood mass of a human with body mass 70 kilograms.
Substituting the given values , we get
