Question

A drop of water contains 2 x 10^4 bacteria. How many bacteria are in 100 gallons of water? [1 drop = 1 mL]

Answer 1

Number of bacteria in 100 gallons 757082.4×10⁴.

Step-by-step explanation:

Given data:

Number of bacteria in one drop of water = 2×10⁴

Number of bacteria in 100 gallons = ?

Solution:

It is given that one drop of water is equal to the 1mL.

Now we will calculate the number of milliliters in 100 gallons.

1 gallons = 3785 mL

100× 3785.412 mL = 378541.2 mL

Now we will calculate the number of bacteria in 378541.2 mL or 100 gallons.

378541.2 mL × 2×10⁴ bacteria

757082.4×10⁴ bacteria