Question

Hair Products 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 $800,000, which corresponded to the sale of 40,000 units. The
company sold half as many units of the $30 product as units of the $20 product. How many units of each
product were sold?

Answer 1

number of $30 units ---- x
number of $20 units ---- 2x
number of $10 units ---- 40000-x-2x = 40000-3x

30x + 20(2x) + 10(40000-3x) = 800000
30x + 40x + 400000 - 30x = 800000
40x = 400000
x = 10,000

so
10,000 of the $30 units
20,000 of the $20 units
10,000 of the $10