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 7 ℓ.
- Express 7000 mℓ as a percentage of 5 ℓ.
- Express 60 min as a percentage of 2 hours.
- Express 4 min as a percentage of 30 seconds.
(a)
1 ℓ = 1000 mℓ
7 ℓ = 7000 mℓ
7007000 x 100% = 10%
(b)
7000 mℓ = 7 ℓ
75 x 100% = 140%
(c)
1 h = 60 min
2 h = 120 min
60120 x 100% = 50%
(d)
1 min = 60 seconds
4 min = 240 seconds
24030 x 100% = 800%
Answer(s): 10%, 140%, 50%, 800%