An aquarium holds 6 1/4 gallons of water. The water level has dropped to 4/5 of this amount. How much water should be added to fill the aquarium?

0.2 * 6.25 = 1.25 = 1 1/4 gallon

3/3

3/3 idont know if its right but maybe

To find out how much water should be added to fill the aquarium, we first need to calculate the amount of water currently in the aquarium.

The aquarium initially holds 6 1/4 gallons of water. To convert this mixed number into an improper fraction, we multiply the whole number (6) by the denominator (4) and add the numerator (1) to get 25/4.

The water level has dropped to 4/5 of this amount. To find out how much water is remaining, we multiply 25/4 by 4/5.

(25/4) * (4/5) = (100/20) = 5

So, there are currently 5 gallons of water remaining in the aquarium.

To fill the aquarium, we need to add the difference between the initial capacity (6 1/4 gallons) and the amount of water remaining (5 gallons).

To subtract these quantities, we first convert the mixed number 6 1/4 into an improper fraction:

(6 * 4 + 1) / 4 = 25/4

Now, we subtract 5 from 25/4:

(25/4) - (5) = (25/4) - (20/4) = (5/4)

Therefore, we need to add 5/4 gallons of water to fill the aquarium.