# User Forum

Subject :IMO    Class : Class 6

The least number of square tiles that will be needed to pave a plot 225 m by 30 m is _____.

A 30 tiles
B 15 tiles
C 25 tiles
D 45 tiles

Class : Class 8
It should be 15

## Ans 2:

Class : Class 9
found the solution! the answer is correctif we find hcf of 225 and 30 , WE ARE FINDING OUT THE LENGTH OF ONE SIDE OF A TILE , NOT THE NO. OF TILESTHEN , WE FIND THE AREA OF ONE TILE , THAT IS 15*15=225NOW, DIVIDE THE AREA OF PLOT BY AREA OF ONE TILE .YOU WILL GET THE ANSWER I.E 30

## Ans 3:

Class : Class 6
I also agree to arijit

## Ans 4:

Class : Class 9
The answer is C. 15 tiles.

## Ans 5:

Class : Class 6
those who have written 30 have no brains

## Ans 6:

Class : Class 8
the answer should be 30. the side of one tile is 15 cm ,but they have asked the tile so it should be 30 only . and those who say that children who are having the answer30 have no brains they only don't have brains

## Ans 7:

Class : Class 7
It should be 15 because the area is not divisible by 30

Class : Class 8
IT should be 15

## Ans 9:

Class : Class 8
It should be 15 because the area is not divisible by 15 ........... ALSO if the area be divisible by 30 , but they asked the least number of tiles ......so it cannot be 30 at all

Class : Class 10

## Ans 11:

Class : Class 6
I agree to Arjit. It should be 15 because 225 is not divisible by 30

## Ans 12:

Class : Class 9
you should all think a bit(mine answer is also gicen wrong) and read the question properly , I THINK WE SHOULD TRY TO FIND OUT THE NO. OF TILES BY TAKING HCF OF 225 AND 30 . REASONS1)BECAUSE THE CHAPTER IS ABOUT NO. CALCULATION , NOT MENSURATION2) YOU DO NOT HAVE A DEFINITE METHOD BY FIRST FINDING THE AREA AND THEN DOING ALL THESE THINGS . THIS METHOD DOES NOT MAKE SENSEso , first of all , we should try out with hcf best of luck!

Class : Class 10
its 15

## Ans 14:

Class : Class 4
Obviously it should be 15 how 225 is supposed to be divisible by 30 without integers so dedinetly answer is 15

Class : Class 8

## Ans 16:

Class : Class 6
Yes 30 should be the answer

## Ans 17:

Class : Class 10
But they asked how many tilesThe side of one tile is 15cmso if you divide 225x30 (area of the floor)by 15x15 ( area of one tile) you get 30 so 30 is the answer

## Ans 18:

Class : Class 9
The answer should be 15 as 225 is not divisible by 30

## Ans 19:

Class : Class 8
The answer should be 30 because they have asked number of tiles

Class : Class 6

## Ans 21:

Class : Class 8
Guys see the solution

Class : Class 8
it is 30

Class : Class 6

Class : Class 9

Class : Class 6

## Ans 26:

Class : Class 8
the answer must be 30 but checking by calculating 15 is wrong. The answer= (225x30)/30=30

## Ans 27:

Class : Class 7
This one has too many mixed answers. SOF has to give the master answer in simple english

Class : Class 6