At first, a pail contained
15 ℓ of water. Fanny added another
13 ℓ of water into the pail. Then she used
48 of all the water in the pail. How much water did Fanny use? Express your answer as a fraction in its simplest form.
Total volume of water in the pail after Fanny added more water into the pail
= 15 + 13
= 315 + 515
= 815 ℓ
8 u = 815
1 u = 815 ÷ 8 = 815 x 18 = 115
Volume of water that Fanny used
= 4 u
= 4 x 115
= 415 ℓ
Answer(s): 415 ℓ