Question
90 percents of what is 45?
Answer
90 percents of 50 is 45?
Explanation
Step 1: Translate the words into an equation.
| 90 percents | of | what | is | 45 |
| 90% | $ \cdot $ | x | = | 45 |
Step 2: Express $ 90% $ as a decimal number.
$$ 80\% = 80 \div 100 = 0.9$$Step 3: Solve for $ x $.
$$ \begin{aligned} 0.9 \cdot x &= 45 \\[1.2 em] x &= \dfrac{ 45 }{ 0.9 } \\[1.2 em] x &= 50 \end{aligned} $$This page was created using
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