Question 14 of 20intermediate🔧 ApplyNumerical3 marks

If 14\frac{1}{4} kg of flour is used to make 12 rotis, how much flour is used to make 6 rotis?

Correct Answer

Step 1: Find flour per roti. 14÷12=14×112=148\frac{1}{4} \div 12 = \frac{1}{4} \times \frac{1}{12} = \frac{1}{48} kg

Step 2: For 6 rotis. 6×148=648=186 \times \frac{1}{48} = \frac{6}{48} = \frac{1}{8} kg

Alternative Method: Since 6 is half of 12, flour = 12×14=18\frac{1}{2} \times \frac{1}{4} = \frac{1}{8} kg

Answer: 18\frac{1}{8} kg of flour is used to make 6 rotis.

Exercise: Figure it Out (Section 4) | Q: 3 | (Page Page 25)
For More Understanding

Explanation

The chapter explains division and multiplication of fractions. Flour per roti = 14÷12=148\frac{1}{4} \div 12 = \frac{1}{48} kg. For 6 rotis: 6×148=648=186 \times \frac{1}{48} = \frac{6}{48} = \frac{1}{8} kg. Alternatively, since 6 is half of 12, flour needed is half of 14\frac{1}{4} kg.

Solution Steps

  1. Step 1: Find flour per roti: 14÷12=14×112=148\frac{1}{4} \div 12 = \frac{1}{4} \times \frac{1}{12} = \frac{1}{48} kg

  2. Step 2: For 6 rotis: 6×148=648=186 \times \frac{1}{48} = \frac{6}{48} = \frac{1}{8} kg

  3. Alternative: Since 6 is half of 12, flour = 12×14=18\frac{1}{2} \times \frac{1}{4} = \frac{1}{8} kg

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