A car runs at the speed of 40km/h when not serviced and runs at 65km/h when serviced.After servicing, the car covers a certain distance in 5 h. How much approximate time will the car take to cover the same distance when not serviced?

Options

A. 10 h
B. 7 h
C. 12 h
D. 8 h

Answer

To solve the problem step by step, we will follow these calculations:

### Step 1: Calculate the distance covered by the car when serviced.
The car runs at a speed of 65 km/h when serviced and covers a distance in 5 hours.

**Distance = Speed × Time**
- Speed = 65 km/h
- Time = 5 hours

**Distance = 65 km/h × 5 h = 325 km**

### Step 2: Calculate the time taken to cover the same distance when not serviced.
When the car is not serviced, it runs at a speed of 40 km/h. We need to find out how long it takes to cover the same distance of 325 km.

**Time = Distance / Speed**
- Distance = 325 km
- Speed = 40 km/h

**Time = 325 km / 40 km/h = 8.125 hours**

### Step 3: Approximate the time.
Since the question asks for the approximate time, we can round 8.125 hours to the nearest whole number.

**Approximate Time = 8 hours**

### Final Answer:
The car will take approximately **8 hours** to cover the same distance when not serviced.

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