Mel has to put the greatest number of
bolts and nuts in each box so each box
has the same number of bolts and the
same number of nuts. should mel use the
greatest common factor or the least
common multiple to solve the problem?

Mel should use the least  common multiple to solve the problem

Solution:

Given, Mel has to put the greatest number of bolts and nuts in each box so each box has the same number of bolts and the same number of nuts.  

We have to find that should Mel use the greatest common factor or the least common multiple to solve the problem?

He should use least common multiple.

Let us see an example, suppose 12 bolts and nuts are to be fit in 6 boxes.

Then, if we took H.C.F of 12 and 6, it is 6, which means 6 bolts and nuts in each box, but, after filling 2 boxes with 6 bolts and nuts, there will be nothing left, which is wrong as remaining boxes are empty.

So the remaining method to choose is L.C.M.

Hence, he should use L.C.M method.

answer: there are 453.592 grams in a pound.