First get the average number of miles covered in three days:
210 miles / 3days = 70 miles per day...
Next convert miles into kilometers:
70 miles x ( 1.6 km / 1 mile) = 112 km per day....
Compute the cost per day:
30.00 + (112 - 20 )(0.22) = $50.24 per day
Since car was rented for 3 days, so just multiply by 3:
Total cost for 3 days = $50.24 x 3
= $150.72 ANSWER
