Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 700 mℓ as a percentage of 5 ℓ.
- Express 5000 mℓ as a percentage of 5 ℓ.
- Express 90 min as a percentage of 2 hours.
- Express 8 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
7005000 x 100% = 14%
(b)
5000 mℓ = 5 ℓ
55 x 100% = 100%
(c)
1 h = 60 min
2 h = 120 min
90120 x 100% = 75%
(d)
1 min = 60 seconds
8 min = 480 seconds
48010 x 100% = 4800%
Answer(s): 14%, 100%, 75%, 4800%