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Rajnish buys 30 books and 65 pens. If price of each book is more than price of each pen than what money does he have to pay for this? A. At a profit of `20%` he sells all the objects for Rs. 3828. B. The CP of one book and one pen is Rs. 90 C. The difference between sum and difference of buying price of ne pen and one book is Rs. 28A. Only A alone or B alone is sufficientB. B or C together are sufficientC. A alone or B and C together are sufficientD. All even together are not sufficient |
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Answer» Correct Answer - C From A :n Profit `=20% and S.P. =3828.` `therefore"Total price"=(3828xx100)/(120)` From `C:(x+y)-(x-y)=28=14y` And `x+y=90` (From B) `x=76` `therefore` A alone or B and C together are sufficient. |
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