Risa had some tea. Each day, she drank an equal amount of tea. At the end of the ninth day, she had 1600 mℓ of tea left. At the end of the tenth day, she had 1400 mℓ of tea left.
- What was the amount of tea she drank each day?
- How much tea did Risa have at first? Give your answer in litres and millilitres.
(a)
Volume of tea that Risa drank each day
= 1600 - 1400
= 200 mℓ
(b)
Volume of tea that Risa had at first
= 1600 + 200 x 9
= 1600 + 1800
= 3400 mℓ
1000 mℓ = 1 ℓ
3400 mℓ = 3 ℓ 400 mℓ
Volume of tea that Risa had at first = 3 ℓ 400 mℓ
Answer(s): (a) 200 mℓ; (b) 3 ℓ 400 mℓ