PSLEThe graphs show the total number of leaflets machines H and J printed from the start. Both machines started printing at the same time.
- How many more leaflets did J print than H in 7 minutes?
- Both machines did not change their rates of printing throughout. When H had printed 150 leaflets, how many leaflets had J printed?
(a)
Machine H:
6 min → 30
Machine J:
6 min → 60
Machine J more than Machine H:
6 min → 60 - 30 = 30
1 min → 30 ÷ 6 = 5
7 min → 7 x 5 = 35
Number of leaflets that Machine J printed more than Machine H in 7 min = 35
(b)
Machine H:
150 leaflets → 30 min
Machine J:
6 min → 60
1 min → 60 ÷ 6 = 10
30 min → 30 x 10 = 300
Number of leaflets that Machine J had printed when Machine H had printed 150 leaflets = 300
Answer(s): (a) 35; (b) 300