Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 400 mℓ as a percentage of 2 ℓ.
- Express 7000 mℓ as a percentage of 5 ℓ.
- Express 90 min as a percentage of 6 hours.
- Express 2 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
4002000 x 100% = 20%
(b)
7000 mℓ = 7 ℓ
75 x 100% = 140%
(c)
1 h = 60 min
6 h = 360 min
90360 x 100% = 25%
(d)
1 min = 60 seconds
2 min = 120 seconds
12010 x 100% = 1200%
Answer(s): 20%, 140%, 25%, 1200%