The total cost of x items at Rs. (x + 5) each is (x^2 + 5x). If the total is Rs. 150, then x =

  1. 15
  2. 30
  3. 5
  4. 10
Answer

D) 10

x^2 + 5x - 150 = 0 Rightarrow (x + 15)(x - 10) = 0; the number of items must be positive, so x = 10. SLO M-09-A-21 · Application

Mathematics MCQ · More Factorization MCQs · Practise