Answer:
42,000 pounds
Step-by-step explanation:
Let's make a proportion
There are 2,000 pounds in 1 ton
2000 pounds is to 1 ton, and x pounds is to 21 tons
2000/1=x/21
Multiply both sides by 21 to "reverse" the division being done to x
21*(2000/1)=(x/21)*21
42,000=x
The loaded truck weighs 42,000 pounds
