Percentage Q57

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 :

Total cost   =   Rs. [1 x 1000 + (100 - 2)% of 1 x 4000]

=   Rs. (1000 + 0.98 x 4000) = Rs. (1000 + 3920) = Rs. 4920.