Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 300 mℓ as a percentage of 6 ℓ.
- Express 5000 mℓ as a percentage of 4 ℓ.
- Express 90 min as a percentage of 2 hours.
- Express 4 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
6 ℓ = 6000 mℓ
3006000 x 100% = 5%
(b)
5000 mℓ = 5 ℓ
54 x 100% = 125%
(c)
1 h = 60 min
2 h = 120 min
90120 x 100% = 75%
(d)
1 min = 60 seconds
4 min = 240 seconds
24080 x 100% = 300%
Answer(s): 5%, 125%, 75%, 300%