PSLEThe graphs show the total number of leaflets machines M and N printed from the start. Both machines started printing at the same time.
- How many more leaflets did N print than M in 8 minutes?
- Both machines did not change their rates of printing throughout. When M had printed 150 leaflets, how many leaflets had N printed?
(a)
Machine M:
10 min → 60
Machine N:
10 min → 100
Machine N more than Machine M:
10 min → 100 - 60 = 40
1 min → 40 ÷ 10 = 4
8 min → 8 x 4 = 32
Number of leaflets that Machine N printed more than Machine M in 8 min = 32
(b)
Machine M:
150 leaflets → 25 min
Machine N:
10 min → 100
1 min → 100 ÷ 10 = 10
25 min → 25 x 10 = 250
Number of leaflets that Machine N had printed when Machine M had printed 150 leaflets = 250
Answer(s): (a) 32; (b) 250