An Aquarium company delivers colored pool water in special p

An Aquarium company delivers colored pool water in special plastic mini-barrels that have a liquid capacity of 25 gallons. Your brother wants to fill an aquarium that is 5 feet wide, 2 feet front to back and 27 inches tall, he wants to fill it to about 3 inches from the top. How many of these mini-barrels will he need?

Solution

An aquarium is 27 inches tall. He wants to fill it to about 3 inches from the top.

Therefore, to calculate the volume of the aquarium, we have to consider depth = 27 - 3 = 24 inches.

As 12 inches = 1 foot, 24 inches = 2 feet.

Here,

depth = 2 feet,

width = 5 feet,

length = 2 feet

Volume of an aquarium = Length * Width * Depth

1 cubic foot of water contains 7.5 gallons.

Therefore, Volume of an aquarium ( in gallons of water) = Length * Width * Depth * 7.5

= 2 * 5 * 2 * 7.5

= 150

Thus, he needs 150 gallons of water to fill an aquarium.

A liquid capacity of a mini-barrel = 25 gallons.

So, he will need 150 / 25 = 6 mini-barrels.