Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 700 mℓ as a percentage of 7 ℓ.
- Express 2000 mℓ as a percentage of 1 ℓ.
- Express 30 min as a percentage of 2 hours.
- Express 8 min as a percentage of 20 seconds.
(a)
1 ℓ = 1000 mℓ
7 ℓ = 7000 mℓ
7007000 x 100% = 10%
(b)
2000 mℓ = 2 ℓ
21 x 100% = 200%
(c)
1 h = 60 min
2 h = 120 min
30120 x 100% = 25%
(d)
1 min = 60 seconds
8 min = 480 seconds
48020 x 100% = 2400%
Answer(s): 10%, 200%, 25%, 2400%