Question 1201573
the higher-priced speaker dock sells for $1900,
 and the lower-priced speaker dock sells for $800.

Let number of higher priced  dock be x
Number of lower priced will  dock be 3x 
Total docks sold = 4x

Total price of both docks = 1000+800 = 1800

1900x +800*(3x) = 34400

1900x +2400x = 34400
4300x = 34400
x= 34400/4300
x= 8  high priced docks

3x= 24  low priced docks

Check 8*1900+24*800 =34400