.
Use the proportion
=
to find the unknown time in minutes under the question.
From the proportion, x = .
Use your calculator to get the number.
The proportion (*) expresses the fact (the assumption) that the rate of printing is THE SAME in both cases.
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On proportions, see the lessons
- Proportions
- Using proportions to solve word problems
- Using proportions to solve word problems in Physics
- Using proportions to solve Chemistry problems
- Using proportions to estimate the number of fish in a lake
- HOW TO algebreze and solve these problems using proportions
- OVERVIEW of lessons on proportions
in this site.
These lessons were written specially for you.
Read them and become an expert in this area.
Start from the very first lesson.