Question 1205576
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A 20.80 gift box of candy contains 2 varieties. 
One type costs 1.60/kg and the other costs $1.80/kg. 
The number of kg at 1.80 is twice the number of kg as $1.60.
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"A 20.80 gift box of,..."
Is this DOLLARS?
x kilograms of the $1.6 per kg type
2x kilograms of the $1.8 per kg type


Accounting for the price of the 20.80 DOLLAR gift box
{{{1.6x+1.8*2x=20.8}}}

-

{{{(1.6+3.6)x=20.8}}}

{{{5.2x=20.8}}}

{{{highlight(x=4)}}}


4 kilograms of the $1.6 per kg candy
8 kilograms of the $1.8 per kg candy