Pamela had some coffee. Each day, she drank an equal amount of coffee. At the end of the seventh day, she had 1500 mℓ of coffee left. At the end of the eighth day, she had 1100 mℓ of coffee left.
- What was the amount of coffee she drank each day?
- How much coffee did Pamela have at first? Give your answer in litres and millilitres.
(a)
Volume of coffee that Pamela drank each day
= 1500 - 1100
= 400 mℓ
(b)
Volume of coffee that Pamela had at first
= 1500 + 400 x 7
= 1500 + 2800
= 4300 mℓ
1000 mℓ = 1 ℓ
4300 mℓ = 4 ℓ 300 mℓ
Volume of coffee that Pamela had at first = 4 ℓ 300 mℓ
Answer(s): (a) 400 mℓ; (b) 4 ℓ 300 mℓ