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Teo makes a necklace of x wooden beads at $0.50 each and 6 glass beads at $1.25 each. The average cost of the beads in the necklace is $0.75.  What is x?

 Sep 21, 2020
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(50x   +  125(6) )/ (6+x)  = 75

50 x  + 750  = 450 + 75x

300 = 25x

x = 12

 Sep 21, 2020

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