Question

A straw for a box drink is 4 1/8 inches long and costs 0.015 to make.The straws are laid end to end in a line until they extend 123 3/4 inches.How many straws are in the line and how much do they cost ?

Answer 1

(123 3/4) / (4 1/8) =
(495/4) / (33/8) =
495/4 * 8/33 =
990/33 =
30 <== so there are 30 straws in the line

and if each straw costs 0.015 to make, then 30 of them will cost :
0.015 * 30 = 0.45 <==