Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 600 mℓ as a percentage of 5 ℓ.
- Express 900 mℓ as a percentage of 3 ℓ.
- Express 60 min as a percentage of 4 hours.
- Express 9 min as a percentage of 90 seconds.
(a)
1 ℓ = 1000 mℓ
5 ℓ = 5000 mℓ
6005000 x 100% = 12%
(b)
900 mℓ = 0.9 ℓ
0.93 x 100% = 30%
(c)
1 h = 60 min
4 h = 240 min
60240 x 100% = 25%
(d)
1 min = 60 seconds
9 min = 540 seconds
54090 x 100% = 600%
Answer(s): 12%, 30%, 25%, 600%