Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 800 mℓ as a percentage of 4 ℓ.
- Express 7000 mℓ as a percentage of 1 ℓ.
- Express 90 min as a percentage of 3 hours.
- Express 4 min as a percentage of 30 seconds.
(a)
1 ℓ = 1000 mℓ
4 ℓ = 4000 mℓ
8004000 x 100% = 20%
(b)
7000 mℓ = 7 ℓ
71 x 100% = 700%
(c)
1 h = 60 min
3 h = 180 min
90180 x 100% = 50%
(d)
1 min = 60 seconds
4 min = 240 seconds
24030 x 100% = 800%
Answer(s): 20%, 700%, 50%, 800%