Six supermarket cashiers
are working today.
It takes one cashier
one minute to serve one
person.
Question: How long would
you have to wait in the
line if you hold client
number 321?
Answers
Answered by
2
Given data:
- Number of cashiers = 6
- Time taken to serve one person = 1 minute
To find:
- Time to wait in the line for client number 321
Step-by-step explanation:
In 1 minute, 6 persons are served by 6 cashiers.
In 2 minutes, 12 persons are served by 6 cashiers.
In 3 minutes, 18 persons are served by 6 cashiers.
In similar way,
in 53 minutes, 318 persons are served by 6 cashiers.
Thus after 53 minutes, client no. 319, 320 and 321 appear at the counter.
Therefore, client number 321 has to wait for 53 minutes in the line and 1 more minute to get served.
Hence total time taken is (53 + 1) minutes = 54 minutes.
NOTE:
We can find the same by dividing 321 by 6.
6 ) 321 ( 53
- 30
____
21
- 18
____
3
Here quotient = 53 and remainder = 3
Hence total time to get served is (53 + 1) minutes = 54 minutes.
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