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