Final answer:
To find out how many pounds of sand are in a yard of concrete, you need to consider the ratio of sand to concrete in a typical concrete mix.
The amount of sand in a concrete mix is usually expressed as a percentage of the total volume of concrete. Once you know the sand-to-concrete ratio, you can calculate the weight of sand in a yard of concrete.
Step-by-step explanation:
To find out how many pounds of sand are in a yard of concrete, we need to consider the ratio of sand to concrete in a typical concrete mix. The amount of sand in a concrete mix is usually expressed as a percentage of the total volume of concrete. For example, if the sand-to-concrete ratio is 0.5, it means that 50% of the volume of concrete is made up of sand.
Once we know the sand-to-concrete ratio, we can calculate the weight of sand in a yard of concrete. A yard is a unit of volume, so we need to convert it to cubic feet, and then multiply it by the sand-to-concrete ratio to get the volume of sand in a yard of concrete. Finally, we can convert the volume of sand to pounds by multiplying it by the weight of one cubic foot of sand.
Let's say the sand-to-concrete ratio is 0.5 and the weight of one cubic foot of sand is 100 pounds. If we have a yard of concrete, which is equal to 27 cubic feet, the volume of sand in that concrete would be 27 * 0.5 = 13.5 cubic feet. Multiplying this by the weight of one cubic foot of sand, we get 13.5 * 100 = 1350 pounds of sand in a yard of concrete.