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 2 minutes?
- Both machines did not change their rates of printing throughout. When W had printed 150 leaflets, how many leaflets had X printed?
(a)
Machine W:
10 min → 60
Machine X:
10 min → 100
Machine X more than Machine W:
10 min → 100 - 60 = 40
1 min → 40 ÷ 10 = 4
2 min → 2 x 4 = 8
Number of leaflets that Machine X printed more than Machine W in 2 min = 8
(b)
Machine W:
150 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 150 leaflets = 250
Answer(s): (a) 8; (b) 250