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A bar of chocolate costs Rs. 80 but a bo...

A bar of chocolate costs Rs. 80 but a box containing 6 bars of the same chocolate costs Rs.400. What is the effective discount (in %) on the box?
चॉकलेट के 1 बार की कीमत. 80 रूपये है, लेकिन उसी चॉकलेट के 6 बार वाले बॉक्स की कीमत 400 रूपये है। उस बॉक्स पर प्रभावी छूट (% में) क्या है?

A

A)20

B

B)16.67

C

C)25

D

D)15

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CHAMPION PUBLICATION-2017 TIER-II PAPER(13)-EXERCISE
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