The graphs show the total number of leaflets machines Q and R printed from the start. Both machines started printing at the same time.
- How many more leaflets did R print than Q in 5 minutes?
- Both machines did not change their rates of printing throughout. When Q had printed 200 leaflets, how many leaflets had R printed?
(a)
Machine Q:
4 min → 40
Machine R:
4 min → 60
Machine R more than Machine Q:
4 min → 60 - 40 = 20
1 min → 20 ÷ 4 = 5
5 min → 5 x 5 = 25
Number of leaflets that machine R printed more than Machine Q in 5 min = 25
(b)
Machine Q:
200 leaflets → 20 min
Machine R:
4 min → 60
1 min → 60 ÷ 4 = 15
20 min → 20 x 15 = 300
Number of leaflets that R had printed when Q had printed 200 leaflets = 300
Answer(s): (a) 25; (b) 300