Eva had some coffee. Each day, she drank an equal amount of coffee. At the end of the eighth day, she had 1300 mℓ of coffee left. At the end of the ninth day, she had 1000 mℓ of coffee left.
- What was the amount of coffee she drank each day?
- How much coffee did Eva have at first? Give your answer in litres and millilitres.
(a)
Volume of coffee that Eva drank each day
= 1300 - 1000
= 300 mℓ
(b)
Volume of coffee that Eva had at first
= 1300 + 300 x 8
= 1300 + 2400
= 3700 mℓ
1000 mℓ = 1 ℓ
3700 mℓ = 3 ℓ 700 mℓ
Volume of coffee that Eva had at first = 3 ℓ 700 mℓ
Answer(s): (a) 300 mℓ; (b) 3 ℓ 700 mℓ