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 900 mℓ as a percentage of 6 ℓ.
- Express 90 min as a percentage of 5 hours.
- Express 8 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
9002000 x 100% = 45%
(b)
900 mℓ = 0.9 ℓ
0.96 x 100% = 15%
(c)
1 h = 60 min
5 h = 300 min
90300 x 100% = 30%
(d)
1 min = 60 seconds
8 min = 480 seconds
48010 x 100% = 4800%
Answer(s): 45%, 15%, 30%, 4800%