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Question 121Asked in BPSC TRE 2.0 (2023) Mathematics Class 9-10

If 2/x + 3/y = 13 and 5/x – 4/y = –2, then x + y equalsयदि 2/x + 3/y = 13 और 5/x – 4/y = –2 है, तो x + y बराबर है

यदि 2/x + 3/y = 13 और 5/x – 4/y = –2 है, तो x + y बराबर है
  1. A1/61/6
  2. B–1/6–1/6
  3. C5/65/6
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (C) 5/65/6

Explanation

Put a = 1/x and b = 1/y: 2a + 3b = 13 and 5a - 4b = -2 give a = 2, b = 3, so x = 1/2, y = 1/3 and x + y = 5/6.a = 1/x, b = 1/y रखें: 2a + 3b = 13 और 5a − 4b = −2 से a = 2, b = 3; अतः x = 1/2, y = 1/3 और x + y = 5/6।

From BPSC TRE 2.0 (2023) Mathematics Class 9-10 — Previous Year Paper

This is question 121 of BPSC TRE 2.0 (2023) Mathematics Class 9-10 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.