Question 1151349
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...,as much apples that cost $4/kg as oranges that cost $6/kg. 
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That means x kilograms of apples and x kilograms of orange.

{{{4*x+6*x=15}}}

{{{10x=15}}}

{{{2x=3}}}

{{{x=3/2}}}

{{{x=1&1/2}}}--------kilograms of each fruit