The 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 3 minutes?
- Both machines did not change their rates of printing throughout. When N had printed 250 leaflets, how many leaflets had P printed?
(a)
Machine N:
10 min → 100
Machine P:
10 min → 150
Machine P more than Machine N:
10 min → 150 - 100 = 50
1 min → 50 ÷ 10 = 5
3 min → 3 x 5 = 15
Number of leaflets that machine P printed more than Machine N in 3 min = 15
(b)
Machine N:
250 leaflets → 25 min
Machine P:
10 min → 150
1 min → 150 ÷ 10 = 15
25 min → 25 x 15 = 375
Number of leaflets that P had printed when N had printed 250 leaflets = 375
Answer(s): (a) 15; (b) 375