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A recipe requires 40% of its ingredients to be flour. If the total weight of the

Practice Questions

Q1
A recipe requires 40% of its ingredients to be flour. If the total weight of the ingredients is 2 kg, how much flour is needed? (2023)
  1. 600g
  2. 800g
  3. 1kg
  4. 1.2kg

Questions & Step-by-Step Solutions

A recipe requires 40% of its ingredients to be flour. If the total weight of the ingredients is 2 kg, how much flour is needed? (2023)
  • Step 1: Understand that 40% means 40 out of every 100 parts.
  • Step 2: Convert the total weight of the ingredients from kilograms to grams. Since 1 kg = 1000 g, 2 kg = 2000 g.
  • Step 3: Calculate 40% of 2000 g. This can be done by multiplying 2000 g by 0.4 (which is the decimal form of 40%).
  • Step 4: Perform the multiplication: 0.4 * 2000 = 800 g.
  • Step 5: Conclude that 800 g of flour is needed for the recipe.
  • Percentage Calculation – Understanding how to calculate a percentage of a total amount.
  • Unit Conversion – Converting kilograms to grams to perform calculations.
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