john gained 40% by selling his pen for Rs 28. find the cost of the pen?
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Answered by
1
Answer:
the answer is
Step-by-step explanation:
let take cost of pen=x
40%of x=28
40/100×x=28
x=28×100/40
x=70
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Answered by
0
Answer:
profit=40%
SP of pen= Rs.28
therefore, CP = SP ×(100-P%/100)
=28×(100-40/100)
=28×60/100
=28×3/5
=85/5
=16.8
therefore, cost of pen=Rs. 16.8
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