SSC CHSL 2020 PYQ — Question 53

SSC CHSL - 13th October 2020 - Shift 1 • Quantitative Aptitude • Q53

If, 2x+y-2z = 88z – 5 – y; 54y – 6z = 25y + z; 34x – 3z = 9x + z then the value of 2x + 3y + 5z is:

Show answer & explanation

Correct answer: D

Explanation

The correct answer is option 4 i.e 44

Given that

⇒ 2x+y-2z = 88z – 5 – y

⇒ x + y - 2z = 24z - 15 - 3y

⇒ x + 4y -26z = 15    (1)

54y – 6z = 25y + z

⇒ 4y - 6z = 2y + 2z

⇒ y = 4z                     (2)

34x – 3z = 9x + z

⇒ 4x - 3z = 2x + 2z

⇒ 2x = 5z                    (3)

By (1), (2) & (3)

x = 5, y = 8 & z = 2

2x + 3y + 5z = 2(5) + 3(8) + 5(2) = 44