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