Count item by Brand and Type Sales

Hi

I continue practicing in BO, in this moment I am trying to create a new variable to calculate how many items were sold by brand and type of sales consultant. But the problem I have is I have two conditions.

Brand X

Type sales consultant ON    min (0.25 bottles)

Type sales consultant OFF    min (0.50 bottles)

Brand Y

Type sales consultant ON  min (0.17 bottles)

Type sales consultant OFF  min (0.33 bottles)

My data is:

Brand      Type        Item      Sales

X              On          1            0.25

X              On          3              1

X              Off          2            0.50

X              Off          1            0.16

Y              On          1            0.17

Y              On          3              0

Y              Off          2            0.50

Y              Off          1            0.16

my result must be

brand X = 3 (because 2 sales consultant ON sold more than the min (0.25)  AND 1 sales consultant OFF sold more than the min (0.50)

brand Y = 2 (because 1 sales consultant ON sold more than the min (0.17)  AND 1 sales consultant OFF sold more than the min (0.33)

How can I make it?

thanks