Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 800 mℓ as a percentage of 2 ℓ.
- Express 4000 mℓ as a percentage of 8 ℓ.
- Express 60 min as a percentage of 5 hours.
- Express 6 min as a percentage of 40 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
8002000 x 100% = 40%
(b)
4000 mℓ = 4 ℓ
48 x 100% = 50%
(c)
1 h = 60 min
5 h = 300 min
60300 x 100% = 20%
(d)
1 min = 60 seconds
6 min = 360 seconds
36040 x 100% = 900%
Answer(s): 40%, 50%, 20%, 900%