At first, a pail contained
25 ℓ of water. Zara added another
14 ℓ of water into the pail. Then she used
713 of all the water in the pail. How much water did Zara use? Express your answer as a fraction in its simplest form.
Total volume of water in the pail after Zara added more water into the pail
= 25 + 14
= 820 + 520
= 1320 ℓ
13 u = 1320
1 u = 1320 ÷ 13 = 1320 x 113 = 120
Volume of water that Zara used
= 7 u
= 7 x 120
= 720 ℓ
Answer(s): 720 ℓ