If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many pounds of sand are needed to pour a pool deck of 156 cubic feet?
_______pounds
156 * 48 = ______ lbs.
To find the number of pounds of sand needed to pour a pool deck of 156 cubic feet, we'll need to use the given ratio of the mixture.
We know that for 1 cubic foot of concrete, we need 48 lb. of sand.
To find the amount of sand needed for 156 cubic feet of concrete, we can set up a proportion:
(48 lb. of sand) / (1 cubic foot of concrete) = (x lb. of sand) / (156 cubic feet of concrete)
Cross multiplying, we get:
48 lb. * 156 cubic feet = 1 cubic foot * x lb.
Simplifying the equation:
7,488 lb. = x lb.
Therefore, we need 7,488 pounds of sand for the pool deck.