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,

$\text{ the decrement = }\frac{3}{4}-\frac{9}{16}=\frac{12-9}{16}=\frac{3}{16}\text{ inches}$

So the board's thickness in inches decreased by

$\frac{3}{16}$