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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

10% of X° is the Complement of 40% of 2x°. Find X - Mathematics

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प्रश्न

10% of x° is the complement of 40% of 2x°. Find x

बेरीज

उत्तर

∵ 10% of x° is the complement of 40% of 2x°

∴ 10% of x° + 40% of 2x° = 90°

⇒ `10/100"x"+40/100xx2"x"=90°`

⇒ `(10"x")/100+(80"x")/100=90°`

⇒ `(90"x")/100` = 90°

∴ x = `(90xx100)/90`= 100°

Hence x = 100°

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Concept for Pairs of Angles
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पाठ 14: Lines and Angles (Including Construction of angles) - Exercise 14 (A)

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सेलिना Concise Mathematics [English] Class 7 ICSE
पाठ 14 Lines and Angles (Including Construction of angles)
Exercise 14 (A) | Q 19
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