In France, grapes are $2.20\mathrm{lb}$per kilogram. What is the cost of grapes, in dollars per pound, if the exchange rate is $1.14\text{dollars/euro}$.

The given is the cost of grapes in France per kilogram

The objective is to find the cost of the grapes after rounding off to three significant figures

The cost of grapes is,

cost of grapes $=1.95$Euros $/\mathrm{kg}$

So, the cost of gapes is,

cost of grapes $=1.95$Euros per $2.20\mathrm{lb}$

Cost per pound is,

$\text{cost per pound}=1.95\text{Euros}/\mathrm{kg}\left(\frac{1\mathrm{kg}}{2.20\mathrm{lb}}\right)$

$=0.88636$$\text{Euro}/\mathrm{lb}$

The values $\$1.95$and $2.20$have three significant figures.

The given is the cost of grapes in France per kilogram

The objective is to find the cost of the grapes after rounding off to three significant figures

Cost of grapes $=1.75\mathrm{Euros}/\mathrm{kg}$

AS

$1\mathrm{kg}=2.20\mathrm{lb}$

So the cost of grapes $=1.75\text{Eurosper}2.20\text{lb}$

Cost per pound

$\frac{1.75}{2.20}=0.7954$. Euro / pound

$1.75$and $2.20$have three significant features So, if you round up to three significant figures, you get$0.795$Euros per pound.

Given is 1 Euro $=1.36$

So $0.795$Euros per pound $=0.795\times 1.36$per pound $=1.0812\mathrm{S}$per pound

Since $0.795\&1.36$have three significant features So, if you round up to three significant figures, gives $\$1.08$per pound.