Based on the information given the number of units that must be sold to earn profit of $50,000 is 55,000 units.
Using this formula
Units sold=(Fixed cost+Profit)/( Sales price-Variable cost)
Let plug in the formula
Units sold= ($390,000 + $50,000)/($46 - $38)
Units sold=$440,000/8
Units sold=55,000 units
Inconclusion the number of units that must be sold to earn profit of $50,000 is 55,000 units.
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