shopkeeper earns a profit of Rs 2 per pen sold and a loss of Re 1 per pencil sold. If the shopkeeper sells 50 pens and 20 pencils in a day. What is 3 his profit or loss?
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Step-by-step explanation:
PRICE OF PEN = X
PRICE OF PENCIL = Y
COST PRICE OF PEN = 50X ₹
COST PRICE OF PENCIL = 20Y ₹
TOTAL COST PRICE = ( 50X + 20 Y) ₹
SALE RECEIPTS FROM PENS
= 50 X + (50×2)
= 50X + 100 ₹
SALE RECEIPTS FROM PENCIL
= 20Y --20 ₹
TOTAL SALE RECEIPTS
= 50X + 100 +20Y --20
= (50X + 20Y +80) ₹
PROFIT = SALE RECEIPTS--COST
= 50X + 20Y + 80 --50X --20 Y
= 80 ₹
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