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受欢迎的 Word Problems >

If the store has a 20% of sale, what is the original value of the goods she can now buy with a 100 voucher?

解答

I f t h e s t ore ha s a 20% o f s a l e, w ha t i s t h e or i g ina l v a l u e o f t h e g oo d s s h e c an n o w b u y w i t h a 100 v o u c h er ?

解答

Amount before addition : 83.33333 \dots

求解步骤

Translate the problem into an equation:

100 = x + 0.2 x

100 = x + 0.2 x : x = \frac{250}{3}

\frac{250}{3} = 83.33333 \dots

Amount before addition : 83.33333 \dots

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