Lesson eLearning

Rahul needs bricks to construct his new house. He buys new bricks from Brickabad and special bricks from Mumpur. The price list is as follows: New bricks from Brickabad cost for every bricks, and special bricks from Mumpur cost for every bricks. Calculate the total amount spent by Rahul.

hard 4 marks Class 4 · Mathematics · Building with Bricks
Answer

The correct answer is — Step 5: Add the cost of both types of bricks to find the total amount spent: .

Step-by-step solution

  1. Step 1: Calculate the cost of new bricks from Brickabad. Number of thousands = . Cost = .
  2. Step 2: Calculate the cost of special bricks from Mumpur, which is .
  3. Step 3: Calculate the cost of the remaining special bricks from Mumpur. Since is half of , the cost is .
  4. Step 4: Add to find the total cost of Mumpur bricks: .
  5. Step 5: Add the cost of both types of bricks to find the total amount spent: .
Common mistake: Students often forget to calculate the cost for the additional bricks or fail to add the costs of both locations together.

Concept tested: Multi-step cost word problem involving thousands and half-thousands

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