Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 100 mℓ as a percentage of 2 ℓ.
- Express 3000 mℓ as a percentage of 4 ℓ.
- Express 90 min as a percentage of 6 hours.
- Express 9 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
1002000 x 100% = 5%
(b)
3000 mℓ = 3 ℓ
34 x 100% = 75%
(c)
1 h = 60 min
6 h = 360 min
90360 x 100% = 25%
(d)
1 min = 60 seconds
9 min = 540 seconds
54010 x 100% = 5400%
Answer(s): 5%, 75%, 25%, 5400%