Question 18 of 21intermediate🔧 ApplyNumerical4 marks

Anita is making an embroidery on the border of a sari. She needs a 1 m long thread to embroider a 50 cm sari. How much thread would she need for a 5 m sari border? A 1 m long thread costs ₹50. How much money will be needed to buy the thread?

Correct Answer

Given:

  • 1 m thread embroiders 50 cm sari
  • Sari border length = 5 m = 500 cm
  • Cost of 1 m thread = ₹50

Step 1: 5 m sari = 500 cm sari border

Step 2: Thread needed for 50 cm = 1 m

Step 3: Thread needed for 500 cm = (500 ÷ 50) × 1 m = 10 m

Step 4: Cost of 1 m thread = ₹50

Step 5: Cost of 10 m thread = 10 × ₹50 = ₹500

Exercise: Multiplying and Dividing Lengths | Q: 3 | (Chapter: Page 11)
For More Understanding

Explanation

The ratio is: 1 m thread for 50 cm sari. For 5 m = 500 cm sari, the thread needed is 10 times more. So 10 m thread is needed. Cost = 10 × ₹50 = ₹500.

Solution Steps

  1. Step 1: 5 m sari = 500 cm sari border

  2. Step 2: Thread needed for 50 cm = 1 m

  3. Step 3: Thread needed for 500 cm = (500 ÷ 50) × 1 m = 10 m

  4. Step 4: Cost of 1 m thread = ₹50

  5. Step 5: Cost of 10 m thread = 10 × ₹50 = ₹500

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