PSLEThe graphs show the total number of leaflets machines E and F printed from the start. Both machines started printing at the same time.
- How many more leaflets did F print than E in 9 minutes?
- Both machines did not change their rates of printing throughout. When E had printed 200 leaflets, how many leaflets had F printed?
(a)
Machine E:
4 min → 40
Machine F:
4 min → 60
Machine F more than Machine E:
4 min → 60 - 40 = 20
1 min → 20 ÷ 4 = 5
9 min → 9 x 5 = 45
Number of leaflets that Machine F printed more than Machine E in 9 min = 45
(b)
Machine E:
200 leaflets → 20 min
Machine F:
4 min → 60
1 min → 60 ÷ 4 = 15
20 min → 20 x 15 = 300
Number of leaflets that Machine F had printed when Machine E had printed 200 leaflets = 300
Answer(s): (a) 45; (b) 300