IMathAS-libretexts

A jar contain

\displaystyle {650}

gold and silver coins. Each gold coin is valued at

\displaystyle \${9.00}

while each silver coin is valued at

\displaystyle \${4.00}

. If the total monetary value in the jar is

\displaystyle \${4350.00}

, which of the following can be used to model the information if

\displaystyle {x}

represents the number of gold coins and

\displaystyle {y}

represents the number of silver coins?

$\displaystyle {\left\lbrace\begin{array}{ccccc} {9}{x}&+&{4}{y}&=&{650}\\{9}{x}&+&{y}&=&{4350}\end{array}\right.}$
$\displaystyle {\left\lbrace\begin{array}{ccccc} {x}&-&{y}&=&{650}\\{4}{x}&+&{9}{y}&=&{4150}\end{array}\right.}$
$\displaystyle {\left\lbrace\begin{array}{ccccc} {x}&+&{y}&=&{4350}\\{9}{x}&+&{4}{y}&=&{650}\end{array}\right.}$
$\displaystyle {\left\lbrace\begin{array}{ccccc} {x}&+&{y}&=&{650}\\{4}{x}&+&{9}{y}&=&{4350}\end{array}\right.}$
$\displaystyle {\left\lbrace\begin{array}{ccccc} {x}&+&{y}&=&{650}\\{9}{x}&+&{4}{y}&=&{4350}\end{array}\right.}$