Question

Q In an auditorium the number of chairs in first ,second and third row are 20,24and28 respectively . If the total number of row are 30,the find the total number of chairs in auditorium?

Answer 1

In a school Auditorium ,the number of chairs in each row is same as the number of rows of chair .There are 7033 students in a school if we know that less than 31 chairs were empty, how many chairs were empty after all students Sat down.

Ask for details Follow Report by Nithinkm151 05.06.2018

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shivamdalmia

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The number of chairs in each row = The number of rows

Consider no. of rows as height and number of chairs in each row as width, so

This means that it is like a square.

So, Total students = 7033

If we find the sq root of 7033

we get a number = 83.8... (something in decimals)

As, we know that total no. of chairs > 7033 , because there were empty chairs.

So, we find the next nearest natural number to 83.8, i.e. 84

So, 84² = 7056

We have total 7056 chairs

Empty chairs = 7056 - 7033 = 23 ( which should be less than 31)

Therefore, no. of empty chairs after all students sat, were 23

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Answer 2

Answer:2340

Step-by-step explanation: