Linear InequalitiesPYQ Jan 26Question 4503 of 73
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Solve the system and 52x4x85\displaystyle \frac{5-2x}{4} \le \frac{x}{8} - 5 and x+436\displaystyle \frac{x+4}{3} \le 6.

Options

Ax10\displaystyle x \le 10
Bx8\displaystyle x \ge 8
C10x14\displaystyle 10 \le x \le 14
Dx14\displaystyle x \ge 14
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Correct Answer

Option c10x14\displaystyle 10 \le x \le 14

All Options:

  • Ax10\displaystyle x \le 10
  • Bx8\displaystyle x \ge 8
  • C10x14\displaystyle 10 \le x \le 14
  • Dx14\displaystyle x \ge 14

Detailed Solution & Explanation

Given the system of inequalities:
1) 52x4x85\frac{5-2x}{4} \le \frac{x}{8} - 5
2) x+436\frac{x+4}{3} \le 6

Let us solve the first inequality:
52x4x85\frac{5-2x}{4} \le \frac{x}{8} - 5
Multiply both sides by 8\displaystyle 8 to clear the denominators:
2(52x)x402(5 - 2x) \le x - 40
104xx4010 - 4x \le x - 40
Add 4x\displaystyle 4x to both sides:
105x4010 \le 5x - 40
Add 40\displaystyle 40 to both sides:
505x    x1050 \le 5x \implies x \ge 10

Now let us solve the second inequality:
x+436\frac{x+4}{3} \le 6
Multiply both sides by 3\displaystyle 3:
x+418x + 4 \le 18
Subtract 4\displaystyle 4 from both sides:
x14x \le 14

Combining both solutions, we find the common range of x\displaystyle x:
10x1410 \le x \le 14

Hence, **Option C** is the correct answer.

About This Chapter: Linear Inequalities

Paper

Paper 3: Quantitative Aptitude

Weightage

1-3 Marks

Key Topics

Linear Inequalities in one & two variables

This chapter covers Linear Inequalities in one & two variables and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

View Official ICAI Syllabus

Exam Strategy Tip

This topic carries 1-3 Marks weightage. Focus on understanding core concepts rather than memorizing.

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