MCQ
Twice a number when increased by $7$ gives $25.$ The number is:
- A$7$
- ✓$9$
- C$10$
- D$8$
✓
Answer
Correct option: B.
$9$
Let the number be $x.$
As, twice the number when increased by $7$ gives $25.$
$\Rightarrow 2x + 7 = 25$
$\Rightarrow 2x = 25 - 7 ($By transposing $7$ to $R.H.S.)$
$\Rightarrow 2x = 18$
$\Rightarrow\text{x}=\frac{18}{2} ($By transposing $2$ to $R.H.S.)$
$\therefore\text{x}=9$
So, the number is $9.$
Hence, the correct alternative is option $(b).$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Mark $(\checkmark)$ tick against the correct answer in the following:
Which of the following numbers is in standard form?
→Which of the following numbers is in standard form?
Side opposite to the vertex $\text{Q}$ of $\triangle\text{PQR}$ is.
→If $90\%$ of $x$ is $315$ then the value of $x$ is.
→In Fig. the values of $x$ and $y$ are:
→The angle which exceeds its complement by $20^\circ $ is:
→Mark $(\checkmark)$ against the correct answer in the following: $\frac{-3}{8}\div=0?$
→What is $y$ in $10y + 20 = 50?$
→If $D$ is the mid-point of the side $BC$ in $\triangle\text{ABC}$ where $AB = AC$, then $\angle\text{ADC}$ is:
→If $⊗, O,$ and $•$ represent some integers on number line, then descending order of these numbers is.
→$(10 + 20 + 30)$ is equal to:
→