Search 82,201 tutors
FIND TUTORS
Ask a question
0 0

How do I solve it using equations..

Tutors, please sign in to answer this question.

1 Answer

Let x be the number of rows.
 
Leo plants x+29 trees in each row.   Hence the number of rows is given by
 
912            x
------  =  
x+29
 
i.e., after simple algebraic manipulations,   912= x^2 +29x or
x^2 +29x - 912= 0 
 
Solving this second-degree equation, gives two solutions: x=-48, and x =19. We can keep only the positive solution since the number of rows cannot be a negative number.
 
So the number of rows Leo planted is x=19