X.3 Evaluate two-variable equations: word problems

YJT
or
This equation shows how the total amount of paper Edwin's office has recycled depends on the number of weeks since they started the new recycling plan.

p = w + 9

The variable w represents the number of weeks the office has been on the new recycling plan, and the variable p represents the total kilograms of paper recycled. After 5 weeks, how many kilograms of paper will Edwin's office have recycled?

kilograms

1 answer

To determine the total kilograms of paper recycled after 5 weeks, you can substitute the value of \( w \) (the number of weeks) into the equation \( p = w + 9 \).

Given:

  • \( w = 5 \)

Substituting into the equation:

\[ p = 5 + 9 \]

Calculating this gives:

\[ p = 14 \]

Therefore, after 5 weeks, Edwin's office will have recycled 14 kilograms of paper.