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 4 ℓ.
- Express 3000 mℓ as a percentage of 3 ℓ.
- Express 60 min as a percentage of 2 hours.
- Express 4 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
4 ℓ = 4000 mℓ
8004000 x 100% = 20%
(b)
3000 mℓ = 3 ℓ
33 x 100% = 100%
(c)
1 h = 60 min
2 h = 120 min
60120 x 100% = 50%
(d)
1 min = 60 seconds
4 min = 240 seconds
24010 x 100% = 2400%
Answer(s): 20%, 100%, 50%, 2400%