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 5 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:
15 min → 120
Machine X:
15 min → 150
Machine X more than Machine W:
15 min → 150 - 120 = 30
1 min → 30 ÷ 15 = 2
5 min → 5 x 2 = 10
Number of leaflets that Machine X printed more than Machine W in 5 min = 10
(b)
Machine W:
200 leaflets → 25 min
Machine X:
15 min → 150
1 min → 150 ÷ 15 = 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) 10; (b) 250