Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 500 mℓ as a percentage of 5 ℓ.
- Express 1000 mℓ as a percentage of 5 ℓ.
- Express 90 min as a percentage of 6 hours.
- Express 7 min as a percentage of 70 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
5005000 x 100% = 10%
(b)
1000 mℓ = 1 ℓ
15 x 100% = 20%
(c)
1 h = 60 min
6 h = 360 min
90360 x 100% = 25%
(d)
1 min = 60 seconds
7 min = 420 seconds
42070 x 100% = 600%
Answer(s): 10%, 20%, 25%, 600%