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 more leaflets did M print than L in 8 minutes?
- Both machines did not change their rates of printing throughout. When L had printed 200 leaflets, how many leaflets had M printed?
(a)
Machine L:
15 min → 120
Machine M:
15 min → 150
Machine M more than Machine L:
15 min → 150 - 120 = 30
1 min → 30 ÷ 15 = 2
8 min → 8 x 2 = 16
Number of leaflets that Machine M printed more than Machine L in 8 min = 16
(b)
Machine L:
200 leaflets → 25 min
Machine M:
15 min → 150
1 min → 150 ÷ 15 = 10
25 min → 25 x 10 = 250
Number of leaflets that Machine M had printed when Machine L had printed 200 leaflets = 250
Answer(s): (a) 16; (b) 250