Answer:
9 trips
Explanation:
Given that :
Total Distance walked is dependent on the total number of trips made to school ;
d = t + 3 ;
d = total distance in kilometers ; t = number of trips made ;
Number of trips required to walk a total of 12 kilometers ;
d = 12
Putting d = 12 in the equation ;
12 = t + 3
12 - 3 = t
9 = t
Hence, Number of trips made = 9