Respuesta :

Using proportions, the expression for the final amount is:

150(1+d).

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

For this problem, we have that:

  • The increase of d% is equivalent to a multiplication by (1 + d).
  • The increase of 25% is equivalent to a multiplication by 1.25.

Hence the equivalent expression is:

120 x 1.25 x (1 + d) = 150(1+d).

More can be learned about proportions at https://brainly.com/question/24372153

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