PSLEThe graphs show the total number of leaflets machines N and P printed from the start. Both machines started printing at the same time.
- How many more leaflets did P print than N in 8 minutes?
- Both machines did not change their rates of printing throughout. When N had printed 200 leaflets, how many leaflets had P printed?
(a)
Machine N:
10 min → 80
Machine P:
10 min → 150
Machine P more than Machine N:
10 min → 150 - 80 = 70
1 min → 70 ÷ 10 = 7
8 min → 8 x 7 = 56
Number of leaflets that Machine P printed more than Machine N in 8 min = 56
(b)
Machine N:
200 leaflets → 25 min
Machine P:
10 min → 150
1 min → 150 ÷ 10 = 15
25 min → 25 x 15 = 375
Number of leaflets that Machine P had printed when Machine N had printed 200 leaflets = 375
Answer(s): (a) 56; (b) 375