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 5 ℓ.
- Express 8000 mℓ as a percentage of 5 ℓ.
- Express 30 min as a percentage of 2 hours.
- Express 8 min as a percentage of 60 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
8005000 x 100% = 16%
(b)
8000 mℓ = 8 ℓ
85 x 100% = 160%
(c)
1 h = 60 min
2 h = 120 min
30120 x 100% = 25%
(d)
1 min = 60 seconds
8 min = 480 seconds
48060 x 100% = 800%
Answer(s): 16%, 160%, 25%, 800%