Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 100 mℓ as a percentage of 5 ℓ.
- Express 5000 mℓ as a percentage of 1 ℓ.
- Express 90 min as a percentage of 6 hours.
- Express 3 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
1005000 x 100% = 2%
(b)
5000 mℓ = 5 ℓ
51 x 100% = 500%
(c)
1 h = 60 min
6 h = 360 min
90360 x 100% = 25%
(d)
1 min = 60 seconds
3 min = 180 seconds
18010 x 100% = 1800%
Answer(s): 2%, 500%, 25%, 1800%