Yomarie1104
01.02.2021 •
Mathematics
There are 20%, percent more goblins than wizards in magic club. There are 120 goblins in magic club. How many wizards are in the magic club?
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Ответ:
cost/lb of walnuts=$1.25
cost/lb of chocolate chips=$9.75
Step-by-step explanation:
let x=cost/lb of walnuts
let y=cost/lb of chocolate chips
3x+5y=16
6x+2y=22
6x+10y=32 (mult. eq by 2)
6x+2y=22
subtract: 8y=10
y=10/8=1.25
x=16-5y=9.75
cost/lb of walnuts=$1.25
cost/lb of chocolate chips=$9.75