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Mathematics

Three-sevenths of a number is 12. Find the number.

Linear Eqns One Variable

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Answer

Let the required number be x.

Then, three-sevenths of this number = 12

∴37x=123x=12×73x=84x=843=28\therefore \dfrac{3}{7}x = 12 \\[1em] 3x = 12 \times 7 \\[1em] 3x = 84 \\[1em] x = \dfrac{84}{3} \\[1em] = 28

Hence, the required number is 28.

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