aliensbrain
  • Home
  • Study
  • Quizzes
  • 🎤AI Practicefree
  • Notebooks
  • Community
  • Sign in
  • Linear Equations in Two Variables
  • If 99x + 101y = 400 and 101x + 99y = 600, then the value ...
Multiple choice

If 99x + 101y = 400 and 101x + 99y = 600, then the value of x + y is

  1. 4

  2. 5

  3. 6

  4. 8

  5. 10

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

Adding the two equations, 200x + 200y = 1000 Or 200(x + y) = 1000 Or x + y = 5

Keep practicing — related questions

  • If x = 1, y = 2 and z = 0, then the value of 3(x.y + y.z + x.z) + x is
  • When x = 0, y = -1, then the value of expression 2x + 2y is
  • For (x=4,y=3; x && x!=y; x--)y++; cout<< “x = %d“<< x << “y = %d “<< y; returns
  • X sold certain goods to Y for which he is yet to be paid. As long as the payment is not made by Y, (a) X ha...
  • If log a = x - y and log b = x + y, then log 10b/a^2 will be in terms of x and y as
  • X hires a carriage of Y. The carriage is unsafe, though Y is not aware of it, and X is injured. For the inj...
  • Suppose X entity is associated with any number of entities in Y, however, entity Y is associated with almos...
  • In a joint account in the name of X and Y, a request is received to substitute the name of X by Z. Later on...
Play the full quiz 🎤 Practise this topic out loud

Practice this topic

  • Algebraic Expressions (157 questions)
Advertisement
© Aliensbrain | all rights reserved
  • About
  • Contact
  • Terms and Condition
  • Privacy Policy