Question 5 of 22intermediate🔧 ApplyNumerical2 marks

The Earth travels approximately 940 million kilometres around the Sun in a year. How many kilometres will it travel in a week?

Correct Answer

Given: Earth travels 940 million km in 1 year.

Step 1: Convert year to weeks. 1 year = 52 weeks

Step 2: Set up proportion. 940 million km : 52 weeks :: x million km : 1 week

Step 3: Calculate using cross multiplication. x = 940/52 x = 18.08 million km

∴ The Earth will travel approximately 18.08 million kilometres (or about 18 million kilometres) in a week.

Exercise: Figure it Out (Section 2) | Q: 1 | (Page Page 12)
For More Understanding

Explanation

This problem uses proportional reasoning. If Earth travels 940 million km in 1 year (52 weeks), then in 1 week it travels 940/52 million km.

Solution Steps

  1. Step 1: Identify the given information: Earth travels 940 million km in 1 year.

  2. Step 2: Convert year to weeks: 1 year = 52 weeks (approximately).

  3. Step 3: Set up proportion: 940 million km : 52 weeks :: x million km : 1 week

  4. Step 4: Using cross multiplication: x = 940/52 = 18.08 million km

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