Question

It costs Re. 1 to photocopy a sheet of paper. However, 2% discount is allowed
photocopies done after first 1000 sheets. How much will it cost to copy 5000
of paper ?
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Answer 1

Answer:

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

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

Answer 2

For 1st 1000 sheets,

cost1 = 1*1000 = 1000rs

For next 4000 sheets,

cost2 = 1*4000 - (2% of 4000)

= 4000 - (2/100)*4000

= 4000 - 80

= 3920

Total cost = cost1 + cost2

= 1000 + 3920

= 4920 rs