**Problem**

The average monthly salary of
m male employees and f female employees of a company is $2 000.
If the average monthly salary of the male employees is
$(
b +
200), find the average monthly salary of the female employee. |

**Introduction**

This
Secondary 1 (~ grade 7) problem in introductory algebra is challenging due to
the multitude of pieces of information and their interrelationships. Using tables is a good strategy to help us
organise the information.

**Strategy**

What we do
is to fill up each piece of given information in the table first (shown in green below). Once that is done, proceed to figure out the other
blank cells of the table. The more you
do that, the more you would be able to figure out the rest, until you get the
solution.

**Solution**

**Final Remark**

I hope you
enjoyed this tip!

H02. Use a diagram / model

H03. Make a systematic list

H04. Look for pattern(s)

H05. Work backwards

H10. Simplify the problem

H11. Solve part of the problem

H13* Use Equation / write a
Mathematical Sentence

**Suitable Levels**

*****Lower Secondary Mathematics (Secondary 1)

*****GCE ‘O’ Level “Elementary” Mathematics (revision)

* other syllabuses that involve ratios or
algebra

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