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 8 ℓ.
- Express 3000 mℓ as a percentage of 2 ℓ.
- Express 60 min as a percentage of 4 hours.
- Express 3 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
8 ℓ = 8000 mℓ
4008000 x 100% = 5%
(b)
3000 mℓ = 3 ℓ
32 x 100% = 150%
(c)
1 h = 60 min
4 h = 240 min
60240 x 100% = 25%
(d)
1 min = 60 seconds
3 min = 180 seconds
18080 x 100% = 225%
Answer(s): 5%, 150%, 25%, 225%