gourav sell red pen at a loss of rs 1 per packet and blue pens at a profit of rs 6 per packet
if he sell 30 packets of blue pens and makes a profit of rs 360 for the day,find how many packets of red pens he sold that day?
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Answer:
profit on`red pen per packet -6 rupees
profit on 30 packets of Blue pens- 120 rupees
loss on red pen per packet-1 rupees
number of red pens sold-120/30=40
so he sold 40 packets of red pens
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