If Two bodies are equal in magnitude but opposite in direction, show that the ratio of magnitudes of the accelerations of two of the bodies are equal to the inverse ratio of the masses.

where is the photo and the answer choices?

option number c is the right answer.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =