Suppose you begin reading a book on page h and end on page k. If you read ... ...

Suppose you begin reading a book on page h and end on page k. If you read each page completely and the pages are numbered and read consecutively, then how many pages have you read?
(A)    h + k
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set A: Substitution

 
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Suppose you begin reading a book on page h and end on page k. If you read ... ... 
Posted: 06/01/2015 02:28
I can't understand it!!
Contributor
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Posted: 06/01/2015 17:44
Jie Ma, if you read a book beginning from page 1 to 100, how many pages have you read? 100, right?

That is equal to (100-1) + 1, or k-h + 1.