Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 600 mℓ as a percentage of 5 ℓ.
- Express 2000 mℓ as a percentage of 8 ℓ.
- Express 90 min as a percentage of 2 hours.
- Express 2 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
6005000 x 100% = 12%
(b)
2000 mℓ = 2 ℓ
28 x 100% = 25%
(c)
1 h = 60 min
2 h = 120 min
90120 x 100% = 75%
(d)
1 min = 60 seconds
2 min = 120 seconds
12010 x 100% = 1200%
Answer(s): 12%, 25%, 75%, 1200%