Question

In a flower bed there are 25 rose plants in the first row , 21 in the second ,19 in the third soon . There are 5 rose plants in the last row .how many rows are there in the flower bed?



Please answer fast

Answer 1

Step-by-step explanation:

Given rose plants in 1st,2nd and 3rd row are:25,

5=25+(n-1)(-2)

5=25-2n+2

27-2n

2n=27-5

2n=22

n=22/2

=11

So,there are 11 rows of flower bed

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