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 6 ℓ.
- Express 3000 mℓ as a percentage of 4 ℓ.
- Express 30 min as a percentage of 2 hours.
- Express 3 min as a percentage of 30 seconds.
(a)
1 ℓ = 1000 mℓ
6 ℓ = 6000 mℓ
9006000 x 100% = 15%
(b)
3000 mℓ = 3 ℓ
34 x 100% = 75%
(c)
1 h = 60 min
2 h = 120 min
30120 x 100% = 25%
(d)
1 min = 60 seconds
3 min = 180 seconds
18030 x 100% = 600%
Answer(s): 15%, 75%, 25%, 600%