Question

When traveling to Great Britain, Bethany exchanged $874 US dollars into £721 British pounds. How many pounds did she receive for each US dollar?Round to the nearest hundredth if necessary.

Answer 1

Since $874 = 721 British pound

Then we will use the ratio to find how many British pounds for every US dollar

US dollar: British pound

874 : 721

1 : x

Use the cross multiplication

$\begin{gathered} 874\times x=1\times721 \\ 874x=721 \end{gathered}$

Divide both sides by 874 to find x

$\begin{gathered} \frac{874x}{874}=\frac{721}{874} \\ x=0.8249427918 \end{gathered}$

Round it to the nearest hundredth (2 decimal places

Then x = 0.82

Each US dollar = 0.82 British pound