PSLEThe graphs show the total number of leaflets machines E and F printed from the start. Both machines started printing at the same time.
- How many less leaflets did E print than F in 9 minutes?
- Both machines did not change their rates of printing throughout. When E had printed 250 leaflets, how many leaflets had F printed?
(a)
Machine E:
10 min → 50
Machine F:
10 min → 80
Machine E less than Machine F:
10 min → 80 - 50 = 30
1 min → 30 ÷ 10 = 3
9 min → 9 x 3 = 27
Number of leaflets that machine E printed less than Machine F in 9 min = 27
(b)
Machine E:
250 leaflets → 50 min
Machine F:
10 min → 80
1 min → 80 ÷ 10 = 8
50 min → 50 x 8 = 400
Number of leaflets that F had printed when E had printed 250 leaflets = 400
Answer(s): (a) 27; (b) 400