Question

7.
यदि कोई दुकानदार 15 रू. प्रति दर्जन की दर से
पेंसिल बेचकर 25% लाभ कमाता है, तो वह 20 रू.
में 15 पेंसिल बेचकर कितना प्रतिशत लाभ या हानि
उठाएगा?​

Answer 1

Answer:

selling price if 12 pencils is ₹15

selling price of 1 pencil = 15/12= ₹1.25

cost price of 1pencil = 1.25/125×100=₹1

cost of 15 pencil is = ₹1×15=15

selling price of 15 pencils =20

profit on 15 pencils = (20-15)=₹5

profit percentage = 5/15×100= 33.33%

Answer 2

Answer:

let the cost of 12 pencils=x

12 pencil sold ₹15 with 25%

so,(100+profit%)/100×x=15

(100+25)/100×x=15

x=15×100/125=₹12

now, the cost of a pencil=12/12=₹1

the cost of 15 pencils=1×15=₹15

they sold 15 pencils =₹20

so,they got profite=sp-cp=20-15=₹5

percentage of profite=5/15×100=33.33%