PSLEThe graphs show the total number of leaflets machines L and M printed from the start. Both machines started printing at the same time.
- How many less leaflets did L print than M in 7 minutes?
- Both machines did not change their rates of printing throughout. When L had printed 300 leaflets, how many leaflets had M printed?
(a)
Machine L:
6 min → 60
Machine M:
6 min → 90
Machine L less than Machine M:
6 min → 90 - 60 = 30
1 min → 30 ÷ 6 = 5
7 min → 7 x 5 = 35
Number of leaflets that Machine L printed less than Machine M in 7 min = 35
(b)
Machine L:
300 leaflets → 30 min
Machine M:
6 min → 90
1 min → 90 ÷ 6 = 15
30 min → 30 x 15 = 450
Number of leaflets that Machine M had printed when Machine L had printed 300 leaflets = 450
Answer(s): (a) 35; (b) 450