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 3 ℓ.
- Express 900 mℓ as a percentage of 6 ℓ.
- Express 60 min as a percentage of 4 hours.
- Express 5 min as a percentage of 40 seconds.
(a)
1 ℓ = 1000 mℓ
3 ℓ = 3000 mℓ
3003000 x 100% = 10%
(b)
900 mℓ = 0.9 ℓ
0.96 x 100% = 15%
(c)
1 h = 60 min
4 h = 240 min
60240 x 100% = 25%
(d)
1 min = 60 seconds
5 min = 300 seconds
30040 x 100% = 750%
Answer(s): 10%, 15%, 25%, 750%