The graphs show the total number of leaflets machines T and U printed from the start. Both machines started printing at the same time.
- How many more leaflets did U print than T in 2 minutes?
- Both machines did not change their rates of printing throughout. When T had printed 250 leaflets, how many leaflets had U printed?
(a)
Machine T:
10 min → 100
Machine U:
10 min → 150
Machine U more than Machine T:
10 min → 150 - 100 = 50
1 min → 50 ÷ 10 = 5
2 min → 2 x 5 = 10
Number of leaflets that machine U printed more than Machine T in 2 min = 10
(b)
Machine T:
250 leaflets → 25 min
Machine U:
10 min → 150
1 min → 150 ÷ 10 = 15
25 min → 25 x 15 = 375
Number of leaflets that U had printed when T had printed 250 leaflets = 375
Answer(s): (a) 10; (b) 375