Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 200 mℓ as a percentage of 2 ℓ.
- Express 900 mℓ as a percentage of 2 ℓ.
- Express 90 min as a percentage of 6 hours.
- Express 3 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
2002000 x 100% = 10%
(b)
900 mℓ = 0.9 ℓ
0.92 x 100% = 45%
(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): 10%, 45%, 25%, 1800%