57.It
costs Re. 1 to photocopy a sheet of paper. However, 2% discount is allowed on
all photocopies done after first 1000 sheets. How much will it cost to copy
5000 sheets of paper?
[A]
Rs. 3920
[C]
Rs. 4900
[B]
Rs. 3980
[D]
Rs. 4920.
Answer : [D]
Explanation :
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Total
cost = Rs. [1 x 1000 + (100 - 2)% of 1 x 4000]
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=
Rs. (1000 + 0.98 x 4000) = Rs. (1000 + 3920) = Rs. 4920.
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