Given,
Number of shoppers per hour (during business hours) = 84
Time spent by each shopper (average) = 5 mins
Now,
→ 60 mins (1 hour) = 84 shoppers
→ 60 = 84
→ 84/60
→ 1.4
→ 1.4 × 5 = 7
→ 7 shoppers on an average, are waiting in the checkout line to purchase at the "Good Deals store"
–TheExtraterrestrial