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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ८

Find the unknowns x, y and z. Name of the item Marked Price Selling Price Discount DIgital clock ₹ 750 ₹ 615 z

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प्रश्न

Find the unknowns x, y and z.

Name of the item Marked Price Selling Price Discount
Digital clock ₹ 750 ₹ 615 z
योग
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उत्तर

Digital clock marked price (M.P) = ₹ 750,

Selling price (S.P) = ₹ 615, Discount = z

S.P = `"M.P" xx (((100 - "d"%))/100)`

∴ 615 = `750 xx ((100 - z))/100`

∴ (100 − z) = `(615 xx 100)/750`

100 – z = 82

∴ z = 100 – 82, Discount = 18%

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अध्याय 4: Life Mathematics - Exercise 4.2 [पृष्ठ १३१]

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सामाचीर कलवी Mathematics [English] Class 8 TN Board
अध्याय 4 Life Mathematics
Exercise 4.2 | Q 7. (iii) | पृष्ठ १३१

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