David drove a distance (d) of 187 km, correct to 3 significant figures.
he used 28 litres of petrol (p), correct to 2 significant figures.
the petrol consumption (c) of a car, in km per litre, is given by the formula
c-
p
by considering bounds, work out the value of c for david's journey
to a suitable degree of accuracy.
you must show all your working and give a reason for your final answer.

Question:

David drove a distance (d) of 187km, correct to 3 significant figures.

He used 28 litres of petrol (p) correct to 2 significant figures.
The petrol consumption (c) of a car, in km pet litre, is given by the formula
C = d/p
By considering bounds, work out the value of c for David’s journey to a suitable degree of accuracy.
You must show your working and give a reason for your final answer

Answer:

Mileage of David's car was 6.68 km/liter

Explanation:

David drove a distance by his car (d) = 187 km

He used the amount of petrol (p) = 28 liters

The petrol consumption (C) of a car in km per liter =

Consumption =

= 6.67857 ≈ 6.68 km per liter

Mileage of David's car was 6.68 km/liter

To check :

In 1 liter petrol he traveled = 6.68 km

In 28 liter petrol he traveled = 6.68 × 28

                                                 = 187.04 ≈ 187 km