Roshel had some coffee. Each day, she drank an equal amount of coffee. At the end of the eighth day, she had 1500 mℓ of coffee left. At the end of the ninth day, she had 1400 mℓ of coffee left.
- What was the amount of coffee she drank each day?
- How much coffee did Roshel have at first? Give your answer in litres and millilitres.
(a)
Volume of coffee that Roshel drank each day
= 1500 - 1400
= 100 mℓ
(b)
Volume of coffee that Roshel had at first
= 1500 + 100 x 8
= 1500 + 800
= 2300 mℓ
1000 mℓ = 1 ℓ
2300 mℓ = 2 ℓ 300 mℓ
Volume of coffee that Roshel had at first = 2 ℓ 300 mℓ
Answer(s): (a) 100 mℓ; (b) 2 ℓ 300 mℓ