Answer
a. $0.36x$
b. No, 36% of its original price
Work Step by Step
a. $(x-0.4x)-0.4(x-0.4x)$
Factor out $(x-0.4x)$
$ = (x-0.4x)(1-0.4)$
Factor out $x $ from $ (x-0.4x)$
$ = x(1-0.4)(1-0.4)$
$ = x(1-0.4)^{2}$
$ = x(0.6)^{2}$
$ =(0.36) x$
b. From part (a), sale price of the computer is $ =(0.36) x$
$ =(36/100 ) x$ where x is the original price
Sale price of the computer is 36 % of original price.
