Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 900 mℓ as a percentage of 2 ℓ.
- Express 4000 mℓ as a percentage of 8 ℓ.
- Express 30 min as a percentage of 5 hours.
- Express 2 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
9002000 x 100% = 45%
(b)
4000 mℓ = 4 ℓ
48 x 100% = 50%
(c)
1 h = 60 min
5 h = 300 min
30300 x 100% = 10%
(d)
1 min = 60 seconds
2 min = 120 seconds
12080 x 100% = 150%
Answer(s): 45%, 50%, 10%, 150%