Foundation November 2021 Paper 1 Q10

Katy uses the following rule for cooking frozen fish.

• Measure the fish in cm at its thickest point.
• Cook frozen fish for 8 minutes per cm.
• Turn the fish over halfway through the cooking time.

Katy cooks a piece of frozen fish that measures 3 cm at its thickest point.

After how many minutes should Katy turn her piece of fish over? [2]

Sajid uses the following rule for cooking fresh fish.

• Measure the fish in cm at its thickest point.
• Cook fresh fish for 4 minutes per cm.
• Add an extra 5 minutes to the cooking time for fish wrapped in foil.

Sajid cooks a piece of fresh fish that he has wrapped in foil.
He uses the rule and cooks his fish for a total of 31 minutes.

How thick was Sajid’s fish at its thickest point before he cooked it? [2]