Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 900 mℓ as a percentage of 2 ℓ.
- Express 7000 mℓ as a percentage of 2 ℓ.
- Express 90 min as a percentage of 6 hours.
- Express 5 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
9002000 x 100% = 45%
(b)
7000 mℓ = 7 ℓ
72 x 100% = 350%
(c)
1 h = 60 min
6 h = 360 min
90360 x 100% = 25%
(d)
1 min = 60 seconds
5 min = 300 seconds
30010 x 100% = 3000%
Answer(s): 45%, 350%, 25%, 3000%