Question

A cigarette labeled 100’s means that each stick is 100mm long. What will be the total length in inches of all the sticks in a pack if they are placed end to end in a column. Assume that one pack contains 20 sticks.

Answer 1

Given:

$l_0=100\:\rm mm=3.937\: in$

$n=20$

The total length of all the sticks in a pack

$$l=nl_0=20*3.937\:\rm in=78.74 \: in$$