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 9 ℓ.
- Express 5000 mℓ as a percentage of 2 ℓ.
- Express 90 min as a percentage of 3 hours.
- Express 2 min as a percentage of 60 seconds.
(a)
1 ℓ = 1000 mℓ
9 ℓ = 9000 mℓ
9009000 x 100% = 10%
(b)
5000 mℓ = 5 ℓ
52 x 100% = 250%
(c)
1 h = 60 min
3 h = 180 min
90180 x 100% = 50%
(d)
1 min = 60 seconds
2 min = 120 seconds
12060 x 100% = 200%
Answer(s): 10%, 250%, 50%, 200%