A tile is 38 cm long and the space between the tiles is 0.8. How many tiles are required to build a floor 5.82 m long?

2 answers

You know, 7 minutes is not a real long time to get impatient for an answer.

Take a look at what you need.

The first tile uses up 38cm.
Each other tile uses up 38.8 cm, including the grout.

So, the total length of n tiles is 38 + 38.8(n-1)

So, solve this equation for n to see how many tiles to use. Round up toi a whole number.

38 + 38.8n = 582
Oops: 38 + 38.8(n-1) = 582