HOTS Mathematics Primary 6 Average

The average mass of 4 packages is 12 kg. A 5th package of mass 22 kg is added. What is the new average mass of all 5 packages?

A 12 kg
B 14 kg
C 17 kg
D 22 kg
Show Worked Solution

Worked Solution

Step 1: Sum of 4 packages = 4 × 12 = 48 kg. Step 2: New sum = 48 + 22 = 70 kg. Step 3: New average = 70 ÷ 5 = 14 kg. Answer: 14 kg

Correct answer: 14 kg

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