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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

Find the unknowns x, y and z. Name of the item Marked Price Selling Price Discount LED TV y ₹ 11970 5%

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Question

Find the unknowns x, y and z.

Name of the item Marked Price Selling Price Discount
LED TV y ₹ 11970 5%
Sum
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Solution

LED TV selling price = 11970 discount = 5%, Marked price = y

∴ Selling price = `"Marked price" xx (((100 - "d"%))/100)`

∴ 11970 = `y xx ((100 - 5))/100`

∴ y = `(11970 xx 100)/95`

= 126 × 100

= ₹ 12,600

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Chapter 4: Life Mathematics - Exercise 4.2 [Page 131]

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Samacheer Kalvi Mathematics [English] Class 8 TN Board
Chapter 4 Life Mathematics
Exercise 4.2 | Q 7. (ii) | Page 131

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