I need 30 desks in a classroom I have 4 rows with 5 chairs in each how many more do I need
well, you have 5*4 = 20
How many more to get 30?
6 Rows in all (2 more rows of 5 in each row)
To find out how many more desks you need, you'll first need to determine how many chairs are already available in the 4 rows of the classroom. Since each row has 5 chairs, you can multiply the number of chairs per row (5) by the number of rows (4) to find the total number of chairs available.
4 rows x 5 chairs/row = 20 chairs
Next, subtract the number of chairs you already have from the total number of desks you need (30) to find out how many more desks you need.
Desks needed - Chairs already available = Desks still needed
30 desks - 20 chairs = 10 more desks needed
Therefore, you need 10 more desks to have a total of 30 desks in the classroom.