Efficiency is the ratio of to for a system. power in to power out power out to power in power in to power in power out to power out

0.55x745.7j and a calculator

double the distance = divide strength by 4

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 =