I have no idea:

David drove a distance (d) of 187km, to 3 significant figures. He used 28 litres of petrol (p), to 2 significant figures.

The petrol consumption (c) in km per litre is given by the formula: c= d/p

By considering bounds, work out the value of c, to a suitable degree of accuracy. You must show your working and give a reason for your answer.

Thank You!

andrxxa Dec 13, 2018

#1**+2 **

I'm not totally comfortable with sig figs, but I believe that the answer can only be expressed as accurately as least number of sig figs of any data used in the computations.....thus ....the answer should be rounded to 2 sig figs

So

187 / 28 = 6.67 ⇒ 6.7 km / L [rounded to 2 sig figs ]

CPhill Dec 13, 2018