Businesses that directly serve the public try to offer quick service ​ — fast food, drive - through banking, and the like — ​ because they know that pleasing the customer includes cutting down on waiting time.
क्योंकि अगर कम समय में ज़्यादा माल उत्पन्‍न हो तो ज़्यादा मुनाफा होता है ।