MCQ
If $\frac{-3}{7}=\frac{\text{x}}{35}\text{ then }\text{x}=?$
- A$15$
- B$21$
- ✓$-15$
- D$-21$
✓
Answer
Correct option: C.
$-15$
Firstly, write $\frac{-3}{7}$ as a rational number with denominator $35.$
Multiplying the numerator and denominator of $\frac{-3}{7}$ by $5,$
We have:
$\frac{-3}{7}=\frac{-3\times5}{7\times5}=\frac{-15}{35}$
$\therefore\frac{-3}{7}=\frac{\text{x}}{35}$
$\Rightarrow\frac{-15}{35}=\frac{\text{x}}{35}$
$\Rightarrow\text{x}=-15$
Hence, the correct answer is option $(c).$
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