Step-by-step explanation:
last week there were
62 + 60 + 2 = 124 customers. 
that means that the fraction of the customers, who paid by credit card, was
2/124 = 1/62
in situations like that, when we use history data and try to predict future behavior, we use that past experience and extrapolate to a predicted result. 
we simply say that we expect the same fraction, 1/62, if customers to use credit cards.
for the absolute number of predicted credit card customers we multiply the predicted number of customers by the expected fraction
1000 × 1/62 = 500/31 = 16.12903226... ≈ 16
so, he expects 16 credit card customers.
 
        
             
        
        
        
I think it would take 15 days that’s what I got trying to figure out this question
        
             
        
        
        
1/12 is the square root of 1/144
        
             
        
        
        
That would be 1/8 times 288, so the answer would be 36 part time workers.