Answer:
R=-13
Step-by-step explanation:
S=-1-r/5-2
4=-1-r/3
Cross multiply
4*3=-1-r
12=-1-r
Collect like terms
12+1=-r
-r=13
Divide both sides by -
r=-13
You just add the lengths of RS and ST together. In your case RT= 24
2556.6975 days
Your answer would be
46 burgers is the minimum amount, because there are 23 people who will each eat two burgers.