An orchard has 816 apple trees. The number of rows exceeds the number of trees per row by 10. How many trees are there in each row?
Let the rows be r and the trees per row be t. We're given two equations:
(t + 10)t = 816
t^2 + 10t = 816
Subtract 816 from each side of the equation:
t^2 + 10t - 816 = 816 - 816
t^2 + 10t - 816 = 0
We have a quadratic equation. To solve this, we type it in our search engine and we get:
t = (24, -34)
Since the number of trees per row can't be negative, we choose 24 as our answer
Let the rows be r and the trees per row be t. We're given two equations:
- rt = 816
- r = t + 10
(t + 10)t = 816
t^2 + 10t = 816
Subtract 816 from each side of the equation:
t^2 + 10t - 816 = 816 - 816
t^2 + 10t - 816 = 0
We have a quadratic equation. To solve this, we type it in our search engine and we get:
t = (24, -34)
Since the number of trees per row can't be negative, we choose 24 as our answer