Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 700 mℓ as a percentage of 2 ℓ.
- Express 4000 mℓ as a percentage of 5 ℓ.
- Express 60 min as a percentage of 4 hours.
- Express 9 min as a percentage of 30 seconds.
(a)
1 ℓ = 1000 mℓ
2 ℓ = 2000 mℓ
7002000 x 100% = 35%
(b)
4000 mℓ = 4 ℓ
45 x 100% = 80%
(c)
1 h = 60 min
4 h = 240 min
60240 x 100% = 25%
(d)
1 min = 60 seconds
9 min = 540 seconds
54030 x 100% = 1800%
Answer(s): 35%, 80%, 25%, 1800%