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Popular Word Problems >

When a certain number is double and 8 is subtracted from it, the result is 20 Determine the number.

Solution

Wh e n a cer t ain n u mb er i s d o u b l e an d 8 i s s u b t r a c t e d f ro m i t, t h e res u lt i s 20 De t er min e t h e n u mb er .

Solution

The number : - 1 \frac{1}{3}

Solution steps

Represent the number with

x

A.T.Q.:

x - x \cdot 2 \cdot 8 = 20

Solve for

x, x - x \cdot 2 \cdot 8 = 20 : x = - \frac{4}{3}

Convert improper fractions to mixed numbers:

\frac{4}{3} = 1 \frac{1}{3}

The number : - 1 \frac{1}{3}

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