PSLEThe graphs show the total number of leaflets machines G and H printed from the start. Both machines started printing at the same time.
- How many less leaflets did G print than H in 9 minutes?
- Both machines did not change their rates of printing throughout. When G had printed 250 leaflets, how many leaflets had H printed?
(a)
Machine G:
10 min → 100
Machine H:
10 min → 200
Machine G less than Machine H:
10 min → 200 - 100 = 100
1 min → 100 ÷ 10 = 10
9 min → 9 x 10 = 90
Number of leaflets that machine G printed less than Machine H in 9 min = 90
(b)
Machine G:
250 leaflets → 25 min
Machine H:
10 min → 200
1 min → 200 ÷ 10 = 20
25 min → 25 x 20 = 500
Number of leaflets that H had printed when G had printed 250 leaflets = 500
Answer(s): (a) 90; (b) 500