Question

Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.

Answer 1

  4x − 6y
  6x + 2y
  –x + 4y
–2x +   y    
  7x +  y    

∴ Total saving = ₹(7x + y)