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I need help with a mixture problem?
How many pounds of coffee beans selling for $2.40 per pound should be mixed with 5 pounds of coffee beans selling for $1.40 per pound to obtain a mixture selling for $1.90 per pound?
2 Answers
- jacob sLv 79 years agoFavorite Answer
2.40*(x)+1.40*5=1.90(5+x)
2.40x+7=9.5+1.90x
2.40x-1.90x=2.5
.5x=2.5
x=5
- 9 years ago
c=coffee
you havde to add the price for the expensive coffee beans (2.4c) to the price of the cheap coffee beans (7$) and average it to get 1.9
(2.4c+7)/(c+5)=1.9
2.4c+7=1.9(c+5) multiply both sides by c+5
2.4c+7=1.9c+9.5 subtract 1.9c and 7 from both sides
.5c=2.5 divide both sides by .5
c=5
