Question

A woodworking machine decreased the thickness of a board from 3/4 of in inch to 9/16 of an inch. by what number of inches (i) did the thickness of the board decrease ?

Answer 1

The thickness of the board was decreased from 3 / 4 inches to 9 / 16 inches.

Therefore,

`\text{ the decrement = }(3)/(4)-(9)/(16)=(12-9)/(16)=(3)/(16)\text{ inches}`

So the board's thickness in inches decreased by

`(3)/(16)`