Mary read 42 pages of a book on Monday she read 2/5 of the book on Tuesday if she still had 1/4 of the book to read how many pages are there in the book

Respuesta :

Answer: 120 pages

Step-by-step explanation:

42 p on Monday

2/5x on Tuesday

1/4x rest of book

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42+2/5x+1/4x=x

42*20 +8x+5x=20x

840=20x-8x-5x

840=7x

x=840/7

x=120