Question

Paul is going to install tiles on the floor of a swimming pool. The swimming pool is 15 meters long by 7 meters wide. A tile costs $6 and covers 1 square meter of area. What is the cost of installing tiles on the floor of the swimming pool?

Answer 1

First you multiply 7*15 which is 105 than you multiply that bey 6 and all in all it = 630

Answer 2

So we know that the swimming pool is 15 by 7 meters wide. 
15 times 7 is 105.
Now, a tile costs $6 and covers 1 square meter. 
So, we should multiply 105 by 6, which would give us 630.

So, if I'm correct, the answer should be that it costs him $630 to install the tiles on the swimming pool.
(sorry if I'm incorrect)