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Question
Mathematics textbook for Class VI has 320 pages. The chapter ‘symmetry’ runs from page 261 to page 272. The ratio of the number of pages of this chapter to the total number of pages of the book is ______.
Options
11:320
3:40
3:80
272:320
Solution
Mathematics textbook for Class VI has 320 pages. The chapter ‘symmetry’ runs from page 261 to page 272. The ratio of the number of pages of this chapter to the total number of pages of the book is 3:80.
Explanation:
Given, Mathematics textbook for class VI has pages = 320
The chapter symmetry runs from page 261 to page 272.
∴ Number of pages of chapter ‘symmetry’ = 272 – 260 = 12
Ratio of the number of pages of chapter ‘symmetry’ to the total number of pages = `12/320`
= `3/80` ......[On dividing numerator and denominator by 4]
= 3:80
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