Q78 / 180 · COMEDK 2025 (10 May Shift 3) · Mathematics
The solution for the following system of inequalities $3 x-7 <5+x$ and $11-5 x \leq 1$ on a real number line is
- A

- B

- Correct answerC

- D

Solution
We are given the system of two linear inequalities:
1) $3x - 7 < 5 + x$
2) $11 - 5x \leq 1$
Solving the first inequality:
$3x - x < 5 + 7$
$2x < 12$
$x < 6$
Solving the second inequality:
$11 - 1 \leq 5x$
$10 \leq 5x$
$2 \leq x$ or $x \geq 2$
Combining both inequalities, we get $2 \leq x < 6$.
The solution set is the interval $[2, 6)$. On a real number line, this corresponds to a closed circle at $x = 2$ (indicating $x \geq 2$) and an open circle at $x = 6$ (indicating $x < 6$), with the segment between them shaded. This matches the third image provided in the options.
Answer:
1) $3x - 7 < 5 + x$
2) $11 - 5x \leq 1$
Solving the first inequality:
$3x - x < 5 + 7$
$2x < 12$
$x < 6$
Solving the second inequality:
$11 - 1 \leq 5x$
$10 \leq 5x$
$2 \leq x$ or $x \geq 2$
Combining both inequalities, we get $2 \leq x < 6$.
The solution set is the interval $[2, 6)$. On a real number line, this corresponds to a closed circle at $x = 2$ (indicating $x \geq 2$) and an open circle at $x = 6$ (indicating $x < 6$), with the segment between them shaded. This matches the third image provided in the options.
Answer:

Hence, the correct answer is option: 'C'.