The pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full. What fraction of the tank does Jean still need to fill?
3/4 = 9/12
9/12 - 9/12 = 0
The answer to your problem is 0 why because 9/12-9/12=0
To find out what fraction of the tank Jean still needs to fill, we need to compare the amount of water she has already filled to the total capacity of the tank.
The pet shop owner told Jean to fill the tank 3/4 full. In fraction form, this means that the tank should be filled with 3 out of 4 equal parts of water.
Jean, on the other hand, filled the tank 9/12 full. This means that she filled the tank with 9 out of 12 equal parts of water.
To determine what fraction of the tank Jean still needs to fill, we subtract the amount of water she has already added from the total amount of water needed.
To do this, we subtract the fraction of the tank that Jean has already filled (9/12) from the fraction of the tank that needs to be filled (3/4). Let's find the difference:
3/4 - 9/12
To subtract fractions, we need to have a common denominator. In this case, the least common denominator (LCD) is 12. Therefore, we need to convert both fractions to have a denominator of 12:
3/4 = 9/12 (already in terms of 12)
9/12 (already in terms of 12) - 9/12 = 0
The difference between 3/4 and 9/12 is 0, which means that Jean has already filled the tank completely according to the pet shop owner's instructions. Therefore, Jean does not need to fill the tank any further and has filled it completely.