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Bunuel
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cksidharthan
The Condition is he sells twice the number of product A than product B

Let the number of product B he sold is 'n'

25*2*n + 30*n = 50n+30n = 80n.

Therefore the answer must be a product of 80n

400 = 5 * 80n

Therefore the answer is E.

Hi! May I ask u? Why you multiple 80n with 5? Where do you get 5? (Sorry for my bad English :') )
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