We can see from the question that we have two loads of sand:
• One load of sand weighs 4 tons.
,
• The other load of sand weighs 7,500 pounds
Now, we need to find the weight of both loads (the sum of both loads) in pounds.
1. To find this, we have to convert the load of 4 tons into pounds, and we need to find the numbers of pounds that are equivalent to 1 ton. Then we have:
2. Therefore, 4 tons are equivalent to:
3. Now, to find the total weight of sand, in pounds, used for the beach area, we need to add both weights as follows:
Hence, in summary, the total weight of sand, in pounds, used for the beach area is 15,500 pounds (third option).