By recycling 1 ton of paper ,6953 gallons of water are saved. how many gallons of water are saved by recycling 4 tons of papers

So, we know, recycling 1 ton of paper = 6,953 gallons of water saved. This means all we would have to do is multiply both sides of the equation by the number of tons of paper recycled (4). 
1 × 4 = 6,953 × 4

4 tons of paper recycled = 27,812 gallons of water saved

I hope this helps!