A shopkeeper bought pencils at the rate of 8 pencils for ₹57. Calculate (i)his gain% (ii)the number of pencils he should sell to earn a net profit of ₹45.
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Step-by-step explanation:
CP of 1 pencil = 34/8 = ₹ 4.25 per pencil
SP of 1 pencil = 57/12 = ₹ 4.75 per pencil
Gain per pencil = 4.75-4.25 = ₹ 0.50 per pencil
Gain% = 0.50/4.25 *100 = 11.76%
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