PISA 2012 Released
Items
Full Credit
Code 1: An adequate mathematical explanation for choosing the Electrix Company.
•
The Electrix Company. Because 5% of 2000 is 100 and 3% of 6000 is 180, so
on average 280 players of Electrix Company’s daily production are sent for
repair; 280 out of 8000 gives an overall fault rate of 3.5%. A similar calculation
for Tronics Company shows they have an overall fault rate of 3.75%.
[Percentage calculations must be shown for full credit.]
No Credit
Code 0: Other responses.
Code 9: Missing.
PISA 2012 Released Items
APARTMENT PURCHASE
This is the plan of the apartment that George’s parents want to purchase from a real
estate agency.
