.
500 millilitres is 5 (five) times as much as 100 millilitres.
Does it tell you something ?
In this case people say
2.5 milligrams of salt relate to 100 millilitres of the solution
as x milligrams of salt relate to 500 milliliters of the solution
Mathematically, these words are equivalent to (and are replaced by) this PROPORTION
= .
From the proportion,
x = = 2.5*5 = 12.5.
ANSWER. 12.5 milligrams of salt are needed.
Solved. // As you see, the answer value of 12.5 milligrams of salt is 5 (five) times as much as 2.5 milligrams of salt
-- in precise accordance with the common sense.
Solve your next problem by the same way, repeating the same mantra.
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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
- Typical problems on proportions
- Using proportions to estimate the number of fish in a lake
- HOW TO algebreze and solve these problems using proportions
- Problems on proportions for mental solution
- Selected problems on proportions from the archive
- OVERVIEW of lessons on proportions
in this site.
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Read them and become an expert in this area.
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