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 2 ℓ.
- Express 8000 mℓ as a percentage of 1 ℓ.
- Express 90 min as a percentage of 3 hours.
- Express 2 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
1002000 x 100% = 5%
(b)
8000 mℓ = 8 ℓ
81 x 100% = 800%
(c)
1 h = 60 min
3 h = 180 min
90180 x 100% = 50%
(d)
1 min = 60 seconds
2 min = 120 seconds
12080 x 100% = 150%
Answer(s): 5%, 800%, 50%, 150%