Respuesta :
Answer:
Step-by-step explanation:
25%: 640 X .25 =160
640-160= $480
10%: 640 X .10= 64
640- 64= $576
5%: 640 X .05 =32
640- 32= $608
Answer:
the discount with rate 25%=$160,the discount with rate 10%=$64,the discount with rate 5%=$32
Step-by-step explanation:
Hello, I think I can help you with this
the discount is a percentage, a proportion of the real value, we can find that proportion using a simple rule of three
let
100% =$640
Step 1
If
$640= 100%
x? % = 25%
($640/100%)=(x/25%)
isolating x
x=($640*25%)/(100%)
x=$160
the discount with rate 25%=$160
Step2
If
$640= 100%
x? % = 10%
($640/100%)=(x/10%)
isolating x
x=($640*10%)/(100%)
x=$64
the discount with rate 10%=$64
Step 3
If
$640= 100%
x? % = 5%
($640/100%)=(x/5%)
isolating x
x=($640*5%)/(100%)
x=$32
the discount with rate 5%=$32
Have a nice day
