Answer :
Bus = 1.25d + 42
Car = 3d
3d = 1.25d + 42 [solving for days]
1.75d = 42
d = 24
under 24 days, Driving will cost less
over 24 days, Bus will cost less.
Car = 3d
3d = 1.25d + 42 [solving for days]
1.75d = 42
d = 24
under 24 days, Driving will cost less
over 24 days, Bus will cost less.