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Algebra
Pregunta

12:32 PM Wed Jan 12 Alexa is a songwriter who coll...

12:32 PM Wed Jan 12 Alexa is a songwriter who collects royalties on her songs whenever they are played in a commercial or a movie. Alexa will earn \( \$ 20 \) every time one of her songs is played in a commercial and she will earn \( \$ 110 \) every time one of her songs is played in a movie. Alexa earned a total of \( \$ 340 \) in royalties on \( 8 \) commercials and movies. Write a system of equations that could be used to determine the number of commercials and the number of movies on which system.

Answer

x be the total no of commercials  , y be the total no of movies , hence 

20x + 110y = 340  , x + y = 8

Solución
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