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 more leaflets did X print than W in 9 minutes?
- Both machines did not change their rates of printing throughout. When W had printed 200 leaflets, how many leaflets had X printed?
(a)
Machine W:
10 min → 80
Machine X:
10 min → 100
Machine X more than Machine W:
10 min → 100 - 80 = 20
1 min → 20 ÷ 10 = 2
9 min → 9 x 2 = 18
Number of leaflets that Machine X printed more than Machine W in 9 min = 18
(b)
Machine W:
200 leaflets → 25 min
Machine X:
10 min → 100
1 min → 100 ÷ 10 = 10
25 min → 25 x 10 = 250
Number of leaflets that Machine X had printed when Machine W had printed 200 leaflets = 250
Answer(s): (a) 18; (b) 250