Sean is his dad build a tiled walkway in their backyard. the walkway will be 69 feet long and 2 feet wide. the local hardware store sells tiles which are 2 by 2 feet and come in boxes of 6. how many boxes of tiles do they need?

First we should figure out how many times 2 goes into 69,(because each tile is 2 feet long) and I am going to do that by dividing 69 by 2. I got 34.5, so we can just say 35 to make it easier. So we now know we need 35 tiles, but they come in boxes of 6, so we will need to divide 35 by 6. It didn't make a full number (it was 5.833) but we need a full number of tiles so we will round up.

Our final number of how many boxes of tiles is 6.

Area walkway = 69 × 2 = 138 feet^2
1 tile = 4 feet^2
4x = 138
138 ÷ 4 = 34.5 tiles (needs 35 tiles)
1x = 6
x = 6 (1 box have 6 tiles)
6y = 34.5
34.5 ÷ 6 = 5.75(needs 6 boxes)

The clear answer is clearly 25 is very clear to me