ACT 2021 April(D05) Math Question 51 Explanation - ACT Helper

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2021 April(D05) Math Question 51
Word Problems
- Cost
Percentage Increase / Decrease
Choice D
$S a l e p r i c e u s i n g t h e c o u p o n = 25 + 15 = 40$
$R e g u l a r p r i c e \times (1 - 20 %) = S a l e p r i c e u s i n g t h e c o u p o n$
$=> R e g u l a r p r i c e \times (1 - 20 %) = 40$
$=>∴ R e g u l a r p r i c e = \frac{40}{(1 - 20 %)} = 50$
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