Download App

Linear Equations in One Variable — Maths STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7MathsLinear Equations in One Variable1 Mark
MCQ
Mark against the correct answer in the following:Two supplementary angles differ by $20^\circ$ . The smaller of the two measures:
  • ✓
    $60^\circ $
  • B
    $80^\circ $
  • C
    $100^\circ $
  • D
    $120^\circ $
✓

Answer

Correct option: A.
$60^\circ $

Let first angle $= x$
Then second $= 180^\circ - x$
$x - (180^\circ - x) = 20^\circ$
$\Rightarrow x - 180^\circ + x = 20^\circ$
$\Rightarrow 2x = 20^\circ + 180^\circ = 200^\circ$
$x = 100^\circ$
Second angle $= 180^\circ - 100^\circ = 80^\circ$
Smaller angle $= 80^\circ$

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 in One Variable→Linear Equations in One Variable — all question types→Maths STD 7 question papers→Maharashtra Board STD 7 question papers→Maharashtra Board question paper generator→

Similar questions

If $\frac{\text{a}}{2}=\frac{\text{b}}{3}=\frac{\text{c}}{4},$ then $\text{a}:\text{b}:\text{c}=$
→
Mark against the correct answer in the following: In a race, Raghu covers $5\ km$ in $20$ minutes, how much distance will he cover in $50$ minutes ?
→
The order of rotational symmetry of an equilateral triangle is:
→
The third proportional of $3$ and $27$ is:
→
How many metres of carpet 63cm wide will be required to cover the floor of a room 14m by 9m?
→
Mark $(\checkmark)$ against the correct answer in the following: Which is larger out of $\frac{2}{-3}$ and $\frac{-4}{5}?$
→
The minute hand of a clock is $14\ cm$ long. How far does the tip of the minute hand move in $60$ minutes?
→
Mark $(\checkmark)$ against the correct answer in the following:
A car runs $16\ km$ using $1$ litre of petrol. How much distance will it cover in $2\frac{3}{4}\text{ litres}$ of petrol?
→
$(-27) \times (-16) + (-27) \times (-14) = ?$
→
A wire is in the form of a square of side $18 m$ . It is bent in the form of a rectangle, whose length and breadth are in the ratio $3: 1$. The area of the rectangle is:
→