Passage

Read the information carefully and give the answer of the following questions A man goes to a hill station by car. While going upwards (uphill) the consumption of petrol was increased by 25% of the normal consumption of petrol but while going downwards (downhill) the consumption of petrol was decreased by 50% of the normal consumption of petrol. He goes from the point P to the point Q. The total distance between point P and point Q is 525 km in which the total distance travelled by him uphill is 2.5 times of the total distance travelled by him downhill and the total distance travelled by him on the plane surface is 140 km. While coming back from the point Q to point P, he saves 15 litres of petrol and the consumption of petrol is normal on plane surface.

If the speed of car is 55 km per hour on the plane surface and while going uphill, the car’s speed was decreased by 25% of the normal speed and while going downhill the car’s speed was increased by 50% of the normal speed then approximately how much time he would have taken during the entire journey? (if he returns immediately from point Q to point P)