Question

Jean-Paul goes on holiday and drives 780km.
He leaves at 0645 and arrives at 1610.
(a) Find the average speed for the whole journey.
(b) He travels partly on autoroutes and partly on other roads.
He travels for 520 km on autoroutes at an average speed of 105km/h.
Find the average speed for the part of the journey on other roads.
(c) For every 100 km travelled on autoroutes, Jean-Paul’s car uses 6 litres of fuel.
For every 100 km travelled on other roads, it uses 8 litres of fuel.
Fuel costs 1.63 euros per litre.
The total autoroute toll charges are 15.20 euros.
Find the total cost of the journey

Answer 1

Answer:

Go through the attachments..

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation: －