Reagan is reading a mystery novel. She has 3 chapters left to read, and each chapter contains 12 pages. The book has 342 pages in all. Which of the following gives the number of pages Reagan has already read?

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dora259 dora259 · Answer 1 · 2021-04-29T18:52:32+02:00

Answer:

342 − (3 × 12)

342 + (-12) + (-12) + (-12)

306

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Explanation :

The number of chapters left is 3, and each chapter has 12 pages. So, the number of pages left to read is (3 × 12).

The book has 342 pages in all. The number of pages Reagan has read is the difference of 342 and (3 × 12):

342 − (3 × 12) = 342 − 36 = 306.

The expression 342 + (-12) + (-12) + (-12) is also equivalent to 306.

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ashishdwivedilVT ashishdwivedilVT · Answer 2 · 2022-03-25T09:02:30+01:00

The number of pages already read by Reagan is 306 pages.

It is given that:

Total number of pages = 342

Chapters left to read = 3

Each chapter contains 12 pages

So, number of pages left to read = 12*3 =36 pages

The number of pages already read will be =total pages - pages left to read

So, number of pages already read = 342 - 12*3

So, number of pages already read = 342-36 = 306 pages.

Therefore, the number of pages already read by Reagan is 306 pages.

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