Would it have been wrong to take a different approach with calculating the revenues?
The approach I took was, I tried to calculate the total daily revenue through calculating the revenues from the night and day shift separately.
Firstly,
no. passengers per day = (airport passengers) * (percentage of passengers using taxi)/ (days in a year)
= 84M*20%/350
= 48,000 passengers
That means,
daytime shift = (total taxis used in day) * dayfare
= (no. of passengers per day * % of day passengers)/passengers/taxi * dayfare
assuming on average a taxi is shared between 2 passengers
= (48,000* 50%)/2 * 70
= 840,000
Night shift = (total taxis used at night) * dayfare
= (no. of passengers per day * % of night passengers)/passengers/taxi * dayfare
assuming on average a taxi is shared between 2 passengers
= (48,000* 50%)/2 * 80
= 960,000
Total Daily Revenues = 840,000+960,000 =1.8M