PSLE Math 2021 Paper 2 Question 5

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(Card Machine Time Rates Question)

PSLE Math 2021 Paper 2 Question 5

Handwritten notes with two graphs illustrating printing rates. Graph A shows total cards printed over time, with a rate of 40 cards in 5 minutes. Graph B shows a similar graph with a rate of 30 cards in 2 minutes. Additional notes detail calculations comparing the number of cards printed by two methods.

a) Ans: 35

b) Ans: 375
A printed 200 cards → 25 min
B printed: 25 min → 15 × 25 = 375