At first, a pot contained
25 ℓ of water. Zara added another
12 ℓ of water into the pot. Then she used
39 of all the water in the pot. How much water did Zara use? Express your answer as a fraction in its simplest form.
Total volume of water in the pot after Zara added more water into the pot
= 25 + 12
= 410 + 510
= 910 ℓ
9 u = 910
1 u = 910 ÷ 9 = 910 x 19 = 110
Volume of water that Zara used
= 3 u
= 3 x 110
= 310 ℓ
Answer(s): 310 ℓ