Foundation Mathematics Primary 5 Average

The average mass of 6 Primary 5 textbooks bought at NTUC FairPrice is 1.4 kg. Find the total mass of the 6 textbooks.

A 4.29 kg
B 7.4 kg
C 8.4 kg
D 9.8 kg
Show Worked Solution

Worked Solution

Step 1: Recall the relationship — Total = Average × Number of data. Step 2: Substitute the values: Total = 1.4 kg × 6 = 8.4 kg. Final answer: total mass = 8.4 kg. Answer: 8.4 kg

Correct answer: 8.4 kg

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