if 7 pencils would cost you rs 6 more than 5 pencils what is the cost of your 10 pencils
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5x Now , according to the question ; 7 x = 5 x + 6 ⇒ 7 x - 5 x = 6 ⇒ 2 x = 6 ⇒ x = 3 So , cost of 1 pencil = Rs . 3 Therefore. 3 × 10 = Rs . 30 Regards .
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