Download App

Linear Equations — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsLinear Equations1 Mark
MCQ
Tick $(\checkmark)$ the correct answer: If $\frac{\text{n}}{\text{n}+15}=\frac{4}{9},$ then $​​\text{n}=?$
  • A
    $4$
  • B
    $6$
  • C
    $9$
  • ✓
    $12$
✓

Answer

Correct option: D.
$12$
$\frac{\text{n}}{\text{n}+15}=\frac{4}{9}$
$\Rightarrow\text{9n}=4(\text{n}+15)$
$\Rightarrow9\text{n}=4\text{n}+60$
$\Rightarrow9\text{n}-4\text{n}=60$
$\Rightarrow5\text{n}=60$
$\Rightarrow\text{n}=\frac{60}{5}=12$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Linear Equations→Linear Equations — all question types→Maths STD 8 question papers→Maharashtra Board STD 8 question papers→Maharashtra Board question paper generator→

Similar questions

Mark $(\checkmark)$ against the correct answer of the following: The product of two numbers is $\frac{-1}{4}$. If one of them is $\frac{-3}{10}$, then the other is$-$
→
Mark against the correct answer in the following:
The dimensions of a cuboid are $8m, 6m, 4m.$ Its lateral surface area is:
→
Tick the correct answer in the following:  Two coins are tossed simultaneously. What is the probability of getting one head and one tail?
→
Tick the correct answer in the following? Each interior angle of a regular decagon is:
→
The diameter of a cylinder is $14 \ cm$ and its curved surface area is $220 \ cm^2$. The volume of the cylinder is:
→
The number of coins, each of radius $0.75\ cm$ and thickness $0.2\ cm,$ to be melted to make a right circular cylinder of height $8\ cm$ and base radius $3 \ cm$ is:
→
Tick $(\checkmark)$ the correct answer in the following: Bananas are bought at $3$ for $Rs. 2$ and sold at $2$ for $Rs. 3. $ The gain percent is:
→
Three cubes of iron whose edges are $6\ cm, 8\ cm$ and $10\ cm$ respectively are melted and formed into a single cube. The edge of the new cube formed is:
→
Tick $(\checkmark)$ the correct answer the following:
If $\left(2^{3 x-1}+10\right) \div 7=6$, then $x$ is equal to:
→
Tick $(\checkmark)$ the correct answer: If $\frac{\text{x}+1}{2\text{x}+3}=\frac{3}{8},$ then $​​\text{x}=?$
→