candles for sale for $8 and some for sale at $12. She sold 30 candles and made $320, she was not sure how many of each kind she had sold. How ma

Question

ashlyn had some candles for sale for $8 and some for sale at $12. She sold 30 candles and made $320, she was not sure how many of each kind she had sold. How many candles did she sell at each price?

Answer 1

number of candle sold at $ 8=x

number of candle sold at $ 12=y

 

x+y=30

8x+12y=320

 

solve these system of equation to get the value of x and y