find answer for $6.50 lb and $8.00 lb. mixed to sell 50 lb for $7.40 a lb.

what formula should be used to solve this equation; find answer for $6.50 lb and $8.00 lb. mixed to sell 50 lb for $7.40 a lb.
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1 Answer

????? yu bi sumthun at 6.50$/pound & sumthun els at 8.00$/pound

& yu want averaej kost tu be 7.40 $/pound?????

6.50x +8y=7.40(x+y)

6.5x -7.4x +8y -7.4y=0

-0.9x +0.6y=0

or9x=6y...x=(2/3)y
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