PSLEThe 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 6 minutes?
- Both machines did not change their rates of printing throughout. When T had printed 200 leaflets, how many leaflets had U printed?
(a)
Machine T:
15 min → 120
Machine U:
15 min → 150
Machine U more than Machine T:
15 min → 150 - 120 = 30
1 min → 30 ÷ 15 = 2
6 min → 6 x 2 = 12
Number of leaflets that Machine U printed more than Machine T in 6 min = 12
(b)
Machine T:
200 leaflets → 25 min
Machine U:
15 min → 150
1 min → 150 ÷ 15 = 10
25 min → 25 x 10 = 250
Number of leaflets that Machine U had printed when Machine T had printed 200 leaflets = 250
Answer(s): (a) 12; (b) 250