A mother is 4 times as old as her daughter.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A mother is times as old as her daughter. In years she will be times as old as her daughter. Find their ages now.
Need a reminder? The key ideaShow
For a problem in words, name the two unknowns, write one equation for each fact, solve the pair, and check the answer in the words of the problem.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The pair. and .
Step 2. Substitute. , so years.
Step 3. The mother. years.
Check. In years: . Yes.
Answer: the daughter is years old and the mother years old.
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