ACT 2019 April(Z15) Math Question 17 Explanation - ACT Helper

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2019 April(Z15) Math Question 17
Probability
- One Event
Choice E
$G r a d e C o r h i g h e r : 10 + 26 + 18 = 54$ $\Rightarrow \frac{G r a d e C o r h i g h e r}{T o t a l} = \frac{54}{60} = \frac{9}{10} = 0.9$
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