Multiple choice

Find the values of x and y from the equations – = 1 and + = 3.5.

  1. x = 2, y = 3

  2. x = 4, y = 3

  3. x = 4, y = 9

  4. x = 2, y = 9

  5. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Take = a, = b. Then, the equations will become 4a – 3b = 1 ……..(1) And a + ab = 3.5 ………(2) (1) × 3 + (2)⇒ a = and by substituting a in either (1) and (2), we can get b = . a = = ⇒ x = 4 and b = = ⇒ y = 9 Option 3 is correct.