PSLEThe graphs show the total number of leaflets machines B and C printed from the start. Both machines started printing at the same time.
- How many more leaflets did C print than B in 6 minutes?
- Both machines did not change their rates of printing throughout. When B had printed 200 leaflets, how many leaflets had C printed?
(a)
Machine B:
10 min → 80
Machine C:
10 min → 150
Machine C more than Machine B:
10 min → 150 - 80 = 70
1 min → 70 ÷ 10 = 7
6 min → 6 x 7 = 42
Number of leaflets that Machine C printed more than Machine B in 6 min = 42
(b)
Machine B:
200 leaflets → 25 min
Machine C:
10 min → 150
1 min → 150 ÷ 10 = 15
25 min → 25 x 15 = 375
Number of leaflets that Machine C had printed when Machine B had printed 200 leaflets = 375
Answer(s): (a) 42; (b) 375