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 → 50
Machine H:
10 min → 150
Machine G less than Machine H:
10 min → 150 - 50 = 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 → 50 min
Machine H:
10 min → 150
1 min → 150 ÷ 10 = 15
50 min → 50 x 15 = 750
Number of leaflets that H had printed when G had printed 250 leaflets = 750
Answer(s): (a) 90; (b) 750