SSC CGL 2023 PYQ — Question 9

SSC CGL Tier II - 2 March 2023 - Shift 1 • Quantitative Aptitude • Q9

For what value of m will the system of equations 17x + my + 102 = 0 and 23x + 299y + 138 = 0 have infinite number of solutions?

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. 221

Given that 

The equations 17x + my + 102 = 0 and 

23x + 299y + 138 = 0

As we know for equation 

a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0

Infinite no. of solution 

a1/a2 = b1/b2 = c1/c2

Hence, 17/23 = m/299

m = 17 × 13 = 221