If you 320 students attending a talent show and you need 23 rows of chairs an they need to be the same amount then how many chairs would you need?

Question

This is a challenging Question.

Answer 1

320 ÷ 23 = 13  21/23

 

We need to round up since can't sit part of a kid on a chair.

23 * 14 = 322

 

We need 322 chairs total (with each row holding 14 chairs).

Answer 2

If you divide 320 by 23 you get 13.91....doesn't make sense right?

I mean, how could you have 13.9 chairs? Does that mean one of the chairs is missing a leg?   lol

 

In this case, round UP in order to make certain the last chair is in tact!

Now you have 23 rows of 14 chairs.

This will seat 322 students even though you only have 320 students attending.

 

If you had rounded down to 13, you would not have enough chairs for all the students.