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 4 ℓ.
- Express 2000 mℓ as a percentage of 5 ℓ.
- Express 90 min as a percentage of 3 hours.
- Express 4 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
4 ℓ = 4000 mℓ
6004000 x 100% = 15%
(b)
2000 mℓ = 2 ℓ
25 x 100% = 40%
(c)
1 h = 60 min
3 h = 180 min
90180 x 100% = 50%
(d)
1 min = 60 seconds
4 min = 240 seconds
24010 x 100% = 2400%
Answer(s): 15%, 40%, 50%, 2400%