Respuesta :

mhanifa

Answer:

  • Ruben had 50 books

Step-by-step explanation:

Let the initial number of books be x.

Set equation:

  • x + 6 = x + 12%
  • x + 6 = x + 0.12x
  • 0.12x = 6
  • x = 6/0.12
  • x = 50
ItzTds

Answer:

50 books

Step-by-step explanation:

Forming the equation,

→ x + ((x/100) × 12) = x + 6

Now the value of x will be,

→ x + ((x/100) × 12) = x + 6

→ x - x + (12x/100) = 6

→ 0.12x = 6

→ x = 6/0.12

→ [ x = 50 books ]

Hence, answer is 50 books.