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 8 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:
10 min → 60
Machine J:
10 min → 100
Machine J more than Machine H:
10 min → 100 - 60 = 40
1 min → 40 ÷ 10 = 4
8 min → 8 x 4 = 32
Number of leaflets that Machine J printed more than Machine H in 8 min = 32
(b)
Machine H:
150 leaflets → 25 min
Machine J:
10 min → 100
1 min → 100 ÷ 10 = 10
25 min → 25 x 10 = 250
Number of leaflets that Machine J had printed when Machine H had printed 150 leaflets = 250
Answer(s): (a) 32; (b) 250