Answer:
7/10 or 70% or 0.7
Step-by-step explanation:
4 black, 10 red
10+4=14
now you put it over the total marbles
14/20=7/10
i don't know how your teacher wants you to give the answer but it is 7/10 or 0.7 or 70%
$45 - 15% = $38.25
$53 - 20% = $42.04
So the Forever 21 dress would cost less.
Hope this helped.