MCQ
Mark $(\checkmark)$ against the correct answer in the following: A number increased by $20\%$ gives $42$. The numbers:
- ✓$35$
- B$28$
- C$36$
- D$30$
✓
Answer
Correct option: A.
$35$
Let $x$ be the required number
$\therefore\frac{\text{x}\times(100+20)}{100}=42$
$\Rightarrow\frac{\text{x}\times120}{100}=42$
$\Rightarrow\text{x}=\frac{42\times100}{120}=35$
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