Question 1154226
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Let x be the number of pounds each of your neighbor's trucks can carry.  Then the problem says<br>
{{{x+800 = (1/3)*4x}}}
{{{x+800 = (4/3)x}}
{{{800 = (1/3)x}}}
{{{2400 = x}}}<br>
Your neighbor's trucks can each carry 2400 pounds; yours can carry 2400+800 = 3200 pounds.<br>