8 x 3 = 24
24 + 4 = 28
Now if 10 purses are made in 8 hours, and we can see we timesed 8, 3 times, thats 10 x 3 = 30
Now we take in to count the last 4 hours
30 + 4 = 34
And 4 is half of 8 so if we cut 10 in half we get 5.
So, the answer is 35
At least that's what I got :)