Answer :

RedRicin
Just divide each value individually.

[tex]\frac{18t}3 = 6t \\\\ \frac{42\ lbs}3 = 14\ lbs[/tex]

Thus a third of 18t. and 42 lbs. is 6t. and 14 lbs.
mel2169

A ton is 2,000 pounds so multiply 2,000 x 18

2,000 x 18 =  36,000 pounds, now add the 42 pounds to the 36,000

36,000 + 42 = 36,042 pounds. Now divide 36,042 by 3

36,042 ÷ 3 = 12,014

Your answer is 12,014 pounds

If you need your answer in tons it's 6.007 tons

Calculations for pounds to tons

12,014 ÷ 2,000 = 6.007

Hope this helps. :)