PSLEThe graphs show the total number of leaflets machines W and X printed from the start. Both machines started printing at the same time.
- How many less leaflets did W print than X in 9 minutes?
- Both machines did not change their rates of printing throughout. When W had printed 250 leaflets, how many leaflets had X printed?
(a)
Machine W:
10 min → 50
Machine X:
10 min → 60
Machine W less than Machine X:
10 min → 60 - 50 = 10
1 min → 10 ÷ 10 = 1
9 min → 9 x 1 = 9
Number of leaflets that machine W printed less than Machine X in 9 min = 9
(b)
Machine W:
250 leaflets → 50 min
Machine X:
10 min → 60
1 min → 60 ÷ 10 = 6
50 min → 50 x 6 = 300
Number of leaflets that X had printed when W had printed 250 leaflets = 300
Answer(s): (a) 9; (b) 300