Answer:
46,666.7 pounds for three trucks.
Explanation:
Set up a proportion. Find out what 1 truck will carry.
x/1 = 140,000 pounds/9 I take that the period should be a comma.
x = 15555.6 pounds
Now Three trucks out to carry 3 times as much.
3*15555.6 = 46666.7 pounds