1.

Two by third of a number is less than the original number by 20 find the number

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SOLUTION:

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Let \ the \ required \ number \ be\ x\\\\ \frac{2}{3} \ of \ x \ = \ \frac{2}{3} x\\ \\ ACQ\\\\ \frac{2}{3} x = x\ - \ 20 \\ \\

\frac{2}{3} x - x = - 20 \\\\ \frac{2x - 3x }{3} = -20\\\\ \frac{-x}{3} = -20\\\\ -x = -20 X 3\\\\ -x = -60\\\\ x = 60


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