PSLEThe graphs show the total number of leaflets machines B and C printed from the start. Both machines started printing at the same time.
- How many less leaflets did B print than C in 9 minutes?
- Both machines did not change their rates of printing throughout. When B had printed 300 leaflets, how many leaflets had C printed?
(a)
Machine B:
6 min → 60
Machine C:
6 min → 90
Machine B less than Machine C:
6 min → 90 - 60 = 30
1 min → 30 ÷ 6 = 5
9 min → 9 x 5 = 45
Number of leaflets that Machine B printed less than Machine C in 9 min = 45
(b)
Machine B:
300 leaflets → 30 min
Machine C:
6 min → 90
1 min → 90 ÷ 6 = 15
30 min → 30 x 15 = 450
Number of leaflets that Machine C had printed when Machine B had printed 300 leaflets = 450
Answer(s): (a) 45; (b) 450