Thursday

December 18, 2014

December 18, 2014

Posted by **James** on Sunday, January 15, 2012 at 9:30am.

- Mathematics -
**Reiny**, Sunday, January 15, 2012 at 10:15amLet the amount of the $2.50 coffee be x kg

then the amount of the $3.50 coffee will be 20-x kg

2.5x + 3.5(20-x) = 2.8(20) = 56

times 10

25x + 35x(20-x) = 560

25x + 700 - 35x = 560

-10x = -140

x = 14

He should mix 14 kg of the $2.50 and 6 kr of the $3.50 coffee.

**Answer this Question**

**Related Questions**

algebra - a coffee shop mixed brazilian coffee worth $5 per kg with Turkish ...

Maath - A coffee shop mixes French roast coffee worth $9 per pound with Kona ...

college algebra - store mixes a Brazilian coffee worth worth $10 per kilogram ...

Algebra - A store mixes Kenyan coffee worth $11 per kilogram and Turkish coffee ...

Math 114 - a store mixes kenyan coffee worth $11 per kilogram and turkish coffee...

Math - A store mixes Brazilian coffee worth $10 per kilogram and Turkish coffee ...

math - A store mixes Kenyan Coffee worth $11 per Kilogram and venezuelan coffee ...

math - A store mixes Brazilian coffee worth $11 per Kilogram, Turkish coffee ...

algebra - A store mixes Brazilian coffee worth $11 per kilogram and Venezuelan ...

Math - How many pounds of coffee worth $7.50 per pound must be blended with ...