Answer:
$384
Step-by-step explanation:
100%-25%=75% 100%-20%=80%
640*0.75=480 (price after 25% off)
480*0.80 =384 (price after the second discount of 20%)
perimeter of rectangle= 2(4+X)
32=8+2x
32-8=2x
26=2x
26/2=X
14=X
perimeter of triangle=3×sides
20=3x
20/3=X
6.66=x
