A Hair Product Company Sells Three Types of Hair Products

Multiple Choice

A hair product company sells three types of hair products for $30,$20 and $10 per unit.In one year,the total revenue for the three products was $820,000 which corresponded to the sale of 42,000 units.The company sold half as many units of the $30 products as units of the $20 product.Use Cramer's Rule to solve a system of linear equations to find how many units of each product were sold. ​

A) 10,000 units at $30,20,000 units at $20,12,000 units at $10.
B) 10,000 units at $30,20,000 units at $20,18,000 units at $10.
C) 10,000 units at $30,20,000 units at $20,20,000 units at $10.
D) 10,000 units at $30,20,000 units at $20,14,000 units at $10.
E) 10,000 units at $30,20,000 units at $20,16,000 units at $10.