Please show all calculations to do this problem.

The following information is available for the Gabriel Products Company for the month of July:

______________________________________________Static Budget______Actual

Units__________________________________________5,000____________5,100

Sales Revenue__________________________________$60,000__________$58,650

Variable manufacturing costs_______________________$15,000__________$16,320

Fixed manufacturing costs_________________________$18,000__________$17,000

Variable marketing and administrative expense_________$10,000__________$10,500

Fixed marketing and administrative expense___________$12,000__________$11,000

The total sales-volume variance for the month of July would be..?

Answer was $700 favorable