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There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty?

We added and got 189 then divided by 3. But it doesn't look correct.
How do we show the work?

Why did you add?

Why did you divide by 3?

70 people are sitting.
They fill up full rows of seats
There are 7 seats in a row.

Then the answer is 10.

They fill up 10 rows.

But the question asks how many rows are empty.

Hint: How many rows are in the auditorium?

16 rows empty

7 are empty.

however, the choices are
6
10
16
and 28

i think it is 6.

there are 6 empty rows

The answer is 7

112 divided by 7 = 16 10 rows are filled so 6 rows empty

Hmm -- there are 16 rows all together. 112/7 = 16

But 10 are already filled. How many are empty?

Did you know?

Did you know that when trying to determine the number of empty rows in a school auditorium, it is important to use proper mathematical operations? In this case, the given information tells us that there are 112 seats in the auditorium and each row has 7 seats. It also states that there are 70 people seated, filling up full rows. To find the number of empty rows, we can subtract the number of filled rows from the total number of rows. However, adding 112 and 7, then dividing by 3 yields an incorrect result. Instead, we should divide the number of total seats (112) by the number of seats per row (7) to find the total number of rows, then subtract the number of filled rows (70 divided by 7) to find the number of empty rows. This will give us the accurate answer.