In order to make a call between two cities, custumer have to pay $0.4/ minute if call is made between 6:00 am to 24:pm, and $0.25 if the call is made from 24:00 to 6:00 in the morning
According to a notice, if the call between two cities at 2:00 cost $16 then how much do they have to pay for the call of the same duration at 10:00 pm
(You have to write down the calculations and result, but don't have to write down any explanation)
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