Lesson eLearning

A boy has 20 rupees. He buys a book for 7 rupees, gives 5 rupees to a friend, and receives 2 rupees as change. How many rupees does he have now?

hard 3 marks Class 3 · Mathematics · Give and Take
Answer
10 rupees

The correct answer is 10 rupees — Therefore, the boy has 10 rupees left.

Step-by-step solution

  1. Start with 20 rupees.
  2. Subtract the cost of the book: rupees remain.
  3. Subtract the 5 rupees he gives to his friend: rupees remain.
  4. Add the 2 rupees change: rupees remain.
  5. Therefore, the boy has 10 rupees left.
Common mistake: Adding the change before subtracting the book price

Concept tested: Combining give and take operations

Published · How this solution was prepared and checked

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