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 2 ℓ.
- Express 1000 mℓ as a percentage of 5 ℓ.
- Express 30 min as a percentage of 5 hours.
- Express 5 min as a percentage of 40 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
3002000 x 100% = 15%
(b)
1000 mℓ = 1 ℓ
15 x 100% = 20%
(c)
1 h = 60 min
5 h = 300 min
30300 x 100% = 10%
(d)
1 min = 60 seconds
5 min = 300 seconds
30040 x 100% = 750%
Answer(s): 15%, 20%, 10%, 750%