Question

The sales tax in Michigan is 6%. Mohammed purchased a computer, including sales tax,for $1,086.50. Find the cost of the computer before sales tax.

Answer 1

Let the cost of the computer be x

6% of x + x = $1,086.50

6x/100 + x = $1,086.50

0.06x + x = $1,086.50

1.06x = $1,086.50

Divide both-side of the equation by 1.06

1.06x /1.06 = $1,086.50/1.06

x = $1025

Therefore the cost of the computer before sale tax = $1025