My Mathematics textbook has 400 pages. The chapter "Ratio and Proportion" covers 12 pages. What is the ratio of the number of pages of this chapter to the total number of pages in the textbook?

1 : 12

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12 : 100

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3 : 100

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3 : 400

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Solution

The correct option is C 3 : 100
Number of pages in the Mathematics textbook = 400

Number of pages covering the chapter "Ratio and Proportion" = 12

$∴$ Ratio of the number of pages of this chapter to the total number of pages in the textbook = $\frac{12}{400}$ = $\frac{3}{100}$

Hence, the ratio is 3: 100.

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My Mathematics textbook has 400 pages. The chapter "Ratio and Proportion" covers 12 pages. What is the ratio of the number of pages of this chapter to the total number of pages in the textbook?

The correct option is C 3 : 100Number of pages in the Mathematics textbook = 400 Number of pages covering the chapter "Ratio and Proportion" = 12 ∴ Ratio of the number of pages of this chapter to the total number of pages in the textbook = 12400 = 3100 Hence, the ratio is 3: 100.