Ahmad bought two bags of rice from NTUC FairPrice. The first bag contains 2 3/4 kg of rice and the second bag contains 1 1/2 kg of rice. What is the total mass of rice in both bags? Express your answer as a mixed number in its simplest form.
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Worked Solution
Step 1: Find the LCD of the fraction parts (denominators 4 and 2).
LCD = 4
Step 2: Convert 1 1/2 so its fraction part has denominator 4.
1/2 = 2/4 (multiply numerator and denominator by 2)
So 1 1/2 = 1 2/4
Step 3: Add the whole number parts.
2 + 1 = 3
Step 4: Add the fraction parts.
3/4 + 2/4 = 5/4
Step 5: Convert the improper fraction to a mixed number.
5/4 = 1 1/4
Step 6: Add the results from Steps 3 and 5.
3 + 1 1/4 = 4 1/4 kg
The total mass of rice is 4 1/4 kg.
Correct answer: 4 1/4
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