Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 800 mℓ as a percentage of 8 ℓ.
- Express 3000 mℓ as a percentage of 4 ℓ.
- Express 30 min as a percentage of 2 hours.
- Express 5 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
8 ℓ = 8000 mℓ
8008000 x 100% = 10%
(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
5 min = 300 seconds
30080 x 100% = 375%
Answer(s): 10%, 75%, 25%, 375%