Find the following values without a calculator.
Give your answers in this manner. (Eg 10%, 20%, 30%, 40%)
- Express 900 mℓ as a percentage of 3 ℓ.
- Express 7000 mℓ as a percentage of 7 ℓ.
- Express 60 min as a percentage of 4 hours.
- Express 9 min as a percentage of 10 seconds.
(a)
1 ℓ = 1000 mℓ
3 ℓ = 3000 mℓ
9003000 x 100% = 30%
(b)
7000 mℓ = 7 ℓ
77 x 100% = 100%
(c)
1 h = 60 min
4 h = 240 min
60240 x 100% = 25%
(d)
1 min = 60 seconds
9 min = 540 seconds
54010 x 100% = 5400%
Answer(s): 30%, 100%, 25%, 5400%