A public aquarium is being built to contain neon tetras. Each neon tetra needs 1.25 gallons of water. The aquarium will contain 1×105 gallons of water. How many tetras can it house? Write the answer in scientific notation.

1 answer

To find the number of tetras the aquarium can house, we need to divide the total amount of water in the aquarium by the amount of water each tetra needs.

Total number of tetras = Total amount of water / Amount of water per tetra

Total number of tetras = 1×10^5 gallons / 1.25 gallons

Total number of tetras = 8×10^4 tetras

Therefore, the aquarium can house 8×10^4 tetras.