posted by deedee .
4. If 1 gallon of water weighs 8.34lbs, how much does 3.75 gallons weigh?
Set up a proportion and solve for a letter of choice.
I will let w = weight for 3.75 gallons of water since we are searching for weight.
So, w = weight we are searching for.
1 gallon/3.75 gallons = 8.34 weights/w
Cross-multiply to find w.
w = 8.34 times 3.75
w = 31.275 IBS
Is this clear?