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

Question

Ella · Answer

Let the number be x .    A Q    (x - 1/2) × 1/2  = 1/8   =>  1/2x - 1/4 = 1/8   => 1/2x = 1/8+1/4  => 1/2x = 1/8 +1×2/4×2  => 1/2x = 1/8 + 2/8   => 1/2x = 1+2/8  => 1/2x = 3/8  => x = 3×2/8×1  => x = 6/ 8     By canceling   x= 3/4   answer is 3/4

Vivian

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