Question

There are 120 books altogether on a shelf .the top row has 11 more books than the middle one. The bottom row holds 5 books fewer than the middle one. How many books are there on top row.

Answer 1

Answer:

49

Explanation:

Let the number of books in the middle row be x

and the number of books in the top row be x+11

and the number of books in the bottom row be x-5

According to the problem,

( x+11)+x+(x-5) = 120

or,x+11+x+x-5=120

or,3x=120-6

or,3x=114

or,x=114/3

or,x=38

Therefore,the number of books in the top row is= (38+11)books=49 books