The cost of insuring a car is 1 naira 25kobo for every 50 naira value of car. What is the cost of insuring a car whose value is 5,000 naira?

To find the cost of insuring a car whose value is 5,000 naira, divide the value of the car by 50 naira and multiply it by the cost per 50 naira.

Cost of insuring a car = (Value of car / 50) * cost per 50 naira

Plugging in the given values:

Cost of insuring a car = (5,000 / 50) * 1.25

Simplifying:

Cost of insuring a car = 100 * 1.25

Cost of insuring a car = 125 naira

Therefore, the cost of insuring a car whose value is 5,000 naira is 125 naira.