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A book seller allowed 10% discount on pr...

A book seller allowed 10% discount on printed price. He gets 30% commission from publisher. His profit in percent will be.

A

0.2

B

`28 4/7%`

C

0.25

D

`28 3/7%`

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CHAMPION PUBLICATION-2016 TIER-II PAPER(16)-EXERCISE
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  15. A car travels from A to B with 40 km/h and returns from B to A with 60...

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