Answer:
3
Step-by-step explanation:
Since d represents the number of days the car is rented, Company A charges ...
40d
Company B charges ...
60 +20d
We want to find the value of d that makes these charges be the same value:
40d = 60 +20d
2d = 3 +d . . . . . . . divide by 20
d = 3 . . . . . . . . . . . subtract d
The cost is the same for 3 days.
