Final answer:
To find the time it will need to cover 25 miles, divide the distance by the speed. To find the speed of the truck, divide the distance by the time. The coefficient of variation k is not applicable in this context.
Step-by-step explanation:
To find the time it will need to cover 25 miles, we can use the formula that connects distance and time: speed = distance / time. We know that the truck makes 30 miles in 25 minutes, so we can calculate its speed by dividing the distance by the time: speed = 30 miles / 25 minutes. To find the time needed to cover 25 miles, we rearrange the formula to time = distance / speed: time = 25 miles / (30 miles / 25 minutes).
To find the speed of the truck, we can use the same formula: speed = distance / time. Since we already know that the truck makes 30 miles in 25 minutes, we can simply divide the distance by the time: speed = 30 miles / 25 minutes.
The coefficient of variation k is not relevant to this question, as it is a statistical measure used to quantify the amount of variation or dispersion in a set of data. It does not apply to the speed of the truck.