Respuesta :

Answer:

67.5 kg

Step-by-step explanation:

To determine the weight of 45 books, we need to determine the weight of one book, using the equation (30 books = 45 kg). This can be done by dividing 30 to both sides of the equation. Therefore,

  • ⇒ 30 books/30 = 45/30 kg
  • ⇒ 1 book = 45/30 kg = 3/2 kg = 1.5 kg

We obtained the following equation;

  • ⇒ 1 book = 1.5 kg

Now, multiply both sides by 45 to determine the weight of 45 books.

  • ⇒ 1 book × 45 = 1.5 kg × 45
  • ⇒ 45 books = 67.5 kg

Therefore, the weight of 45 books is 67.5 kg.

Answer:

[tex]\huge\boxed{\bf{45books = 67.5kg}} [/tex]

Step-by-step explanation:

Given:-

  • 30 books = 45kg

To find:-

  • 45 books = ?

Ans:-

30books = 45kg

45books = y kg

Let's find 45 books (y)

[tex]\sf \to \frac{30}{45} = \frac{45}{y}[/tex]

[tex]\sf \to 45*45 = 30*y[/tex]

[tex]\sf \to 2,025 = 30*y[/tex]

[tex]\sf \to y = \frac{2,025}{30}[/tex]

[tex]\sf \to y = 67.5kg[/tex]

~therefore 45books = 67.5kg

[tex]\:[/tex]

[tex]\huge\colorbox{red}{BlackPain}[/tex]

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