Question

Mason is cutting wood for a carpentry project his bossis completing. He has been given boards which are 72 inches long, but he needs them to be 20 percent of this size. How long should the boards be cut to?(he can only measure in fractions of an inch)

Answer 1

Find the how long should the boards be cut to .

To proof

as given

He has been given boards which are 72 inches long,

but he needs them to be 20 percent of this size.

20 % is written in the decimal form

`= (20)/(100)`

= 0.20

20 % of the 72 inches long

=0.20× 72

= 14.4 inches

let us assume that x be the boards be cut to get the 20 percent of the 72 inches long board.

Now find out how long should the boards be cut to.

72 - x = 14.4

x = 72 - 14.4

x = 57.6 inches

Mason cuts 57.6 inches to get 20 percent of the 72 inches long board.

Hence proved