A shopkeeper of Banepa bought 300 pieces of same type of the sari. He sold 70% of them at Rs. 1500 per piece and rest of them at Rs. 1350 per piece. At
what price did he purchese each sari if his profit is Rs. 42000 ?

please answer with explanation
if u ans with no explanation i will report your answer ​

Rs. 1315

Step-by-step explanation:

He bought 300 saris

0.7(300) were sold at 1500 / piece

0.3(300) were sold at 1350/ piece

210 were sold at 1500/ piece = 315000

90 were sold at 1350/piece = 121500

Total amount  = 315000+121500 = 436500

Profit = 42000

Subtract:

436500 - 42000 = 394500

394500 is the price for 300 saris

Divide by 300

394500 / 300 = 1315

He purchased one sari at 1315

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-Chetan K

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value