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 3 ℓ.
- Express 8000 mℓ as a percentage of 5 ℓ.
- Express 60 min as a percentage of 5 hours.
- Express 2 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
3 ℓ = 3000 mℓ
9003000 x 100% = 30%
(b)
8000 mℓ = 8 ℓ
85 x 100% = 160%
(c)
1 h = 60 min
5 h = 300 min
60300 x 100% = 20%
(d)
1 min = 60 seconds
2 min = 120 seconds
12010 x 100% = 1200%
Answer(s): 30%, 160%, 20%, 1200%