can anyody help me? =)

  • 1 vote

could u please help me answer dis question? thnx =P

the average fuel consumption (c) of a car, in kilometres per litre, is given by the formula

c = d/f    where d is the distance travelled in kilometres, and f is the fuel used, in litres

d = 163 correct to 3 significant figures

f = 45.3 correct to 3 significant figures

by considering bounds, work out the value of c to a suitable degree of accuracy.

you must show all of your working and give a reason for your final answer

Posted Thu 7th June, 2012 @ 15:22 by Sabah X

1 Answer

  • 1 vote

I would calculate the upper bound (UB) of c so that is UB of d/LB of f=163.5/45.25=3.613259669 Then calculate the lower bound (LB) of c so that is LB of d/UB of f= 162.5/45.35=3.583241455.

The value of c would be 3.6km/l as this is the most accurate value that both the UB and the LB of c can be rounded to.

Answered Thu 7th June, 2012 @ 15:36 by Dilly