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Six stethoscopes and five endoscopes cost $432.15 whereas five stethoscopes and six endoscopes cost $459.73 how much does one stethoscope cost

1 Answer

4 votes

start by writing the set of equations


\begin{gathered} 6x+5y=432.15 \\ 5x+6y=459.73 \end{gathered}

where x represents the stethoscope and y the endoscope.

use the first equation to solve for x


x=(432.15-5y)/(6)

insert into the second equation and solve for y


5\cdot((432.15-5y)/(6))+6y=459.73
undefined

User Charlie Reitzel
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