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 5 ℓ.
- Express 1000 mℓ as a percentage of 5 ℓ.
- Express 60 min as a percentage of 2 hours.
- Express 9 min as a percentage of 80 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
7005000 x 100% = 14%
(b)
1000 mℓ = 1 ℓ
15 x 100% = 20%
(c)
1 h = 60 min
2 h = 120 min
60120 x 100% = 50%
(d)
1 min = 60 seconds
9 min = 540 seconds
54080 x 100% = 675%
Answer(s): 14%, 20%, 50%, 675%