6x plus 3x plus 4 minus 2
20% * 300 = 2 * (10% * 300) = 2*30 = 60
77 because 4.9 Times 10 Times 3 equals 147 and 1.4 Times 10 Times 5 equals 70 then you would subtract 70 from 140 and get 77
The amount of decrease is $12.00 :$72.00 - $60.00 = $12.00
you then divide the amount of decrease by the original price to find the percent decrease:
$12.00 ÷ $72.00 = .166666... = 16.7%
