A wholesaler mixed coffee beans worth $6/kg with another kind worth $8.80/kg. The 16kg mixture was worth $6.70/kg. How many kilograms of each type was used?

Question

Answer 1 · 2009-11-08 00:08:13

Let the amount of the $6 mixture used be x kg
let the amount of the $8.80 mixture be 16-x kg

then
6x + 8.8(16-x) = 6.7(16)

solve for x

Answer 2 · 2013-05-11 23:46:14

thnx SO MUCH

Answer 3 · 2014-02-10 22:30:13

6x+1408-88x=1072
you may move the decimal 1 place if you want
1408-82x=1072
1408-1072=82x
336=88x
x=336/88

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