High School

If an average Homo sapiens produces 325 g of feces per day, and 30% of it consists of bacteria, how many grams of bacteria does a person's feces consist of per day?

A. 30 g
B. 97.5 g
C. 97.5 g
D. 292.5 g

Answer :

To calculate the amount of bacteria in feces, you calculate 30% of 325 g, which is equal to (b) 97.5 g of bacteria per day. Hence, (b) is the correct option.

If an average homo sapiens produces 325 g of feces per day and 30% of it consists of bacteria, to find out how many grams of bacteria a person's feces consists of per day, one can use the following calculation:

  • Calculate 30% of 325 g.

To calculate percentage, you multiply the total amount by the percentage (in decimal form). So,

  1. Convert the percentage into decimal: 30% = 0.30.
  2. Multiply this decimal by the total weight of the feces: 0.30 times 325 g.
  3. Perform the multiplication: 0.30 imes 325 g = 97.5 g.

Therefore, the weight of the bacteria in the feces per day is 97.5 g. The correct answer is (b) 97.5g.