First this belongs in math. But heres the answer.
For every bag you need 3.5 gallons of water. You have three bags so multiply by three. You end up with 3(3.5) simplify and you get 10.5
First to sing the Declaration of Independence
Thomas Savery's steam<span> pump. The industrial use of </span>steam<span> power started with Thomas Savery in 1698. He constructed and patented in London the first </span>engine<span>, which he called the "Miner's Friend" since he intended it to pump water from mines.</span>
