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If You Subtract 1/2 from a Number and Multiply the Result by 1/2, You Get 1/8. What is the Number - CBSE Class 8 - Mathematics

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Question

If you subtract `1/2` from a number and multiply the result by `1/2`, you get `1/8`. What is the number?

Solution

Let the number be x. According to the question,

`(x - 1/2) xx 1/2 = 1/8`

On multiplying both sides by 2, we obtain

`(x - 1/2) xx 1/2 xx 2 = 1/8 xx2`

`x - 1/2 = 1/4`

On transposing `1/2`  to R.H.S, we obtain

`x = 1/4 + 1/2`

= `(1+2)/4 = 3/4`

Therefore, the number is `3/4`

  Is there an error in this question or solution?

APPEARS IN

 NCERT Solution for Mathematics Textbook for Class 8 (2018 to Current)
Chapter 2: Linear Equations in One Variable
Ex. 2.20 | Q: 1 | Page no. 28

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Solution If You Subtract 1/2 from a Number and Multiply the Result by 1/2, You Get 1/8. What is the Number Concept: Solving Equations Having the Variable on Both Sides.
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