Question

The length and breadth of the floor of a hall is 20m and 10m. Square tiles of 2m dimensions in three different colours are placed on the floor. The first row of tiles on all sides is black. Out of the remaining, one third are white and the rest are blue .How many blue tiles are there?( With steps plz)

Answer 1

20*10=200
2*2=4
200/4=50
50/10=5
50-5=45
1/3*45=15
45-15=30
30tiles are blue