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 4 ℓ.
- Express 900 mℓ as a percentage of 1 ℓ.
- Express 60 min as a percentage of 2 hours.
- Express 9 min as a percentage of 50 seconds.
(a)
1 ℓ = 1000 mℓ
4 ℓ = 4000 mℓ
6004000 x 100% = 15%
(b)
900 mℓ = 0.9 ℓ
0.91 x 100% = 90%
(c)
1 h = 60 min
2 h = 120 min
60120 x 100% = 50%
(d)
1 min = 60 seconds
9 min = 540 seconds
54050 x 100% = 1080%
Answer(s): 15%, 90%, 50%, 1080%