Lesson eLearning

Numerical: The Red Fort in Delhi was started in 1628 and completed in 1648. How many years did its construction take?

easy 1 mark Class 7 · History · Rulers and Buildings
Answer
20 years

The correct answer is 20 years — Thus the construction took 20 years.

Step-by-step solution

  1. Identify the start year: 1628.
  2. Identify the completion year: 1648.
  3. Subtract the start year from the completion year: 1648 – 1628 = 20.
  4. Thus the construction took 20 years.
Common mistake: Adding the years instead of subtracting

Concept tested: Historical dates calculation

Published · How this solution was prepared and checked

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