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 5 ℓ.
- Express 6000 mℓ as a percentage of 3 ℓ.
- Express 90 min as a percentage of 3 hours.
- Express 5 min as a percentage of 40 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
3005000 x 100% = 6%
(b)
6000 mℓ = 6 ℓ
63 x 100% = 200%
(c)
1 h = 60 min
3 h = 180 min
90180 x 100% = 50%
(d)
1 min = 60 seconds
5 min = 300 seconds
30040 x 100% = 750%
Answer(s): 6%, 200%, 50%, 750%