PSLEThe graphs show the total number of leaflets machines A and B printed from the start. Both machines started printing at the same time.
- How many more leaflets did B print than A in 2 minutes?
- Both machines did not change their rates of printing throughout. When A had printed 200 leaflets, how many leaflets had B printed?
(a)
Machine A:
10 min → 80
Machine B:
10 min → 150
Machine B more than Machine A:
10 min → 150 - 80 = 70
1 min → 70 ÷ 10 = 7
2 min → 2 x 7 = 14
Number of leaflets that Machine B printed more than Machine A in 2 min = 14
(b)
Machine A:
200 leaflets → 25 min
Machine B:
10 min → 150
1 min → 150 ÷ 10 = 15
25 min → 25 x 15 = 375
Number of leaflets that Machine B had printed when Machine A had printed 200 leaflets = 375
Answer(s): (a) 14; (b) 375