The graphs show the total number of leaflets machines F and G printed from the start. Both machines started printing at the same time.
- How many more leaflets did G print than F in 7 minutes?
- Both machines did not change their rates of printing throughout. When F had printed 200 leaflets, how many leaflets had G printed?
(a)
Machine F:
4 min → 40
Machine G:
4 min → 60
Machine G more than Machine F:
4 min → 60 - 40 = 20
1 min → 20 ÷ 4 = 5
7 min → 7 x 5 = 35
Number of leaflets that machine G printed more than Machine F in 7 min = 35
(b)
Machine F:
200 leaflets → 20 min
Machine G:
4 min → 60
1 min → 60 ÷ 4 = 15
20 min → 20 x 15 = 300
Number of leaflets that G had printed when F had printed 200 leaflets = 300
Answer(s): (a) 35; (b) 300