Answer:
The percentage change in the total cost of driving in Central London is:
= 33.33%
Step-by-step explanation:
a) Data and Calculations:
Old Fee for driving per minute = $8
New Fee for driving per minute = $16
Percentage change in fee = $8/$8 * 100 = 100%
Driving time at old fee of $8 per minute = 30 minutes
Driving time at new fee of $16 per minute = 20 minutes
Percentage Change in driving time = 10/20 * 100 = 50%
Total cost of driving 30 minutes at old fee of $8 per minute = $240
Total cost of driving 20 minutes at the new fee of $16 per minute = $320
Therefore, the percentage change in the total cost of driving = ($320 -$240)/$240 * 100
= $80/$240 *100 = 33.33%