Remedial Maintenance and Preventative Maintenance

Sir Please do let me the know the answer for this question.

A taxi company operate taxi for a maximum of 1600 hours per year. It generates revenue of $50 per hour and has variable running cost of $30 per hour. The fixed costs are charged at $10 per hour.
THE COMPANY IS EVALUATING TWO OPTIONS FOR THE TAXI MAINTENANCE.

REMEDIAL MAINTENANCE : This is caused by intermittent breakdowns and will, on average, mean the taxi is unavailable and require maintenance for 18 hours per year. Remedial Maintenance costs are $55 per hour.

PREVENTATIVE MAINTENANCE : This will entail the taxi undergoing three intensive services over the year, each of which will take five hours. Preventative maintenance costs are $75 per hour.

BOTH TYPE OF MAINTENANCE WOULD TAKE PLACE IN THE 1600 AVAILABLE OPERATING HOURS PER YEAR.

TASK 1 : THE COMPANY WISHES TO CHOOSE THE MOST ECONOMIC METHOD OF MAINTAINING A TAXI.CALCULATE THE NET ANNUAL RELEVANT COST PER TAXI OF THE TWO OPTIONS WHICH WILL ALLOW THEM TO MAKE THE DECISION

OPTION 1 : REMEDIAL MAINTENANCE $______________
OPTION 2 : PREVENTATIVE MAINTENANCE $_______________

TASK 2:
WHICH OF THE FOLLOWING ARE ADVANTAGES OF REMEDIAL MAINTENANCE ?
1) THE ANNUAL COST OF MAINTENANCE CAN BE ACCURATELY FORECAST
2) THE SERVICE PROVIDED TO CUSTOMERS WILL BE MORE RELIABLE

OPTIONS:
BOTH 1 AND 2
1 ONLY
2 ONLY
NEITHER 1 OR 2

TASK 3 :

VALUE ANALYSIS IS A FORM OF ____________ BY WHICH PHYSICAL AND ___________
PRODUCT OR SERVICE ARE REVIEWED WITH THE AIM OF REDUCING ITS ____________ OF THE CONSUMER.