Answer:
5 days.
Step-by-step explanation:
The food will last her 5 days.
30 books
125%= 1.25
1.25 times 24= 30
Answer: d = 0
5d - 4 = 4 - d
+d +d
____________
6d - 4 = 4
-4 -4
__________
6d = 0
__ __
6 6
d = 0