Yen had some coffee. Each day, she drank an equal amount of coffee. At the end of the sixth day, she had 1600 mℓ of coffee left. At the end of the seventh day, she had 1100 mℓ of coffee left.
- What was the amount of coffee she drank each day?
- How much coffee did Yen have at first? Give your answer in litres and millilitres.
(a)
Volume of coffee that Yen drank each day
= 1600 - 1100
= 500 mℓ
(b)
Volume of coffee that Yen had at first
= 1600 + 500 x 6
= 1600 + 3000
= 4600 mℓ
1000 mℓ = 1 ℓ
4600 mℓ = 4 ℓ 600 mℓ
Volume of coffee that Yen had at first = 4 ℓ 600 mℓ
Answer(s): (a) 500 mℓ; (b) 4 ℓ 600 mℓ