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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Solve: 2x + 20% of X = 12.1 - Mathematics

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प्रश्न

Solve: 2x + 20% of x = 12.1

योग
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उत्तर

2x + 20% of x = 12.1

⇒ 2x + `("x" xx (20))/100 = 12.1`

⇒ 2x + `"20x"/100 = 12.1`

⇒ 2x + `"2x"/10 = 12.1`

`("20x + 2x = 121")/10`

⇒ 22x = 121

⇒ x = `121/22 = 11/2`

∴ x = `11/2` or `5 1/2`

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अध्याय 12: Simple Linear Equations (Including Word Problems) - Exercise 12 (C)

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सेलिना Concise Mathematics [English] Class 7 ICSE
अध्याय 12 Simple Linear Equations (Including Word Problems)
Exercise 12 (C) | Q 30
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