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2.067 pesos colombianos es un dólar ($1.00) de Estados Unidos. Sandra está en un centro comercial en Colombia. Ella compra un disco compacto por 31.005 pesos. ¿Cuánto paga Sandra en dólares por el disco compacto?

User Sam San
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2 Answers

6 votes
En dollares es $15.00
User DeanOC
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6 votes

In order to find the amount in dollars Sandra paid for the compact disk (CD) we have to use the Rule of three. This is a mathematical rule to find out an amount that is with another quantity given in the same relation as other two also known.


For example:



We already know 2,067 Colombian pesos is equivalent to $1 and that Sandra bought the CD for 31,005 Colombian pesos.



With this information we are able to stablish a relation between the Colombian pesos and the United States dollars, as follows:



2,067 Colombian pesos ----- $1


31,005 Colombian pesos -----X



And this is solved as follows:




X=((31005 Colombian pesos)(\$1))/(2067 Colombian pesos)



Finally
X=\$15




Therefore, Sandra paid $15 for the CD.


User Daniel Yankowsky
by
8.6k points
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