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David read 1/5 of a book on the first day. On the second day, he read 75% of the remaining pages. He had 75 pages left to read. How many pages were there in the book?(help me in 5 minutes please)

MaiaMitchell  Oct 3, 2015

Best Answer 

 #2
avatar+9551 
+5

Hallo Maia

 

laugh

Omi67  Oct 3, 2015
 #1
avatar+1832 
+5

On the first day, he read  1/5 of the book, so the remaning is 4/5. 

On the second day, he read 75% from the remaning (4/5), so 0.75*4/5 = 3/5.

 

so now he read 1/5 + 3/5 = 4/5 of the book.

 

the remaning is 1/5, and the question say that he had 75 pages left, so 1/5 of the book = 75 pages 

 

and now you can solve this as an eqation 

 

1/5x = 75 

x= 375

 

so the book contain 375 pages . 

 

hope this is helpful 

xvxvxv  Oct 3, 2015
edited by xvxvxv  Oct 3, 2015
edited by xvxvxv  Oct 3, 2015
edited by xvxvxv  Oct 3, 2015
edited by xvxvxv  Oct 3, 2015
edited by xvxvxv  Oct 3, 2015
 #2
avatar+9551 
+5
Best Answer

Hallo Maia

 

laugh

Omi67  Oct 3, 2015

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