Six trucks will be used to build the roadside for 18 days. After three days, the company sent two more trucks to make. How long will it take for the material to move?

Correct answer:

t =  14.25 d

Step-by-step explanation:

a=6 18=108 b=a3 6=1083 6=90  t=3+b/(6+2)=3+90/(6+2)=14.25 d

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