At first, a pail contained
25 ℓ of water. Diana added another
13 ℓ of water into the pail. Then she used
711 of all the water in the pail. How much water did Diana use? Express your answer as a fraction in its simplest form.
Total volume of water in the pail after Diana added more water into the pail
= 25 + 13
= 615 + 515
= 1115 ℓ
11 u = 1115
1 u = 1115 ÷ 11 = 1115 x 111 = 115
Volume of water that Diana used
= 7 u
= 7 x 115
= 715 ℓ
Answer(s): 715 ℓ