PSLEThe 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 less leaflets did V print than W in 3 minutes?
- Both machines did not change their rates of printing throughout. When V had printed 250 leaflets, how many leaflets had W printed?
(a)
Machine V:
10 min → 50
Machine W:
10 min → 200
Machine V less than Machine W:
10 min → 200 - 50 = 150
1 min → 150 ÷ 10 = 15
3 min → 3 x 15 = 45
Number of leaflets that machine V printed less than Machine W in 3 min = 45
(b)
Machine V:
250 leaflets → 50 min
Machine W:
10 min → 200
1 min → 200 ÷ 10 = 20
50 min → 50 x 20 = 1000
Number of leaflets that W had printed when V had printed 250 leaflets = 1000
Answer(s): (a) 45; (b) 1000