While eating a cornflake, Kim recorded
that the 3 advertisements in the television
he was watching took 4.20 minutes to be
aired. What was the normal length of each
advertisement?
STEPS. ANSWER
1. Know what is asked in
the problem.
2. Know the given facts.
3. Determine the
operation or formula to
use.
4. Write the number
sentence.
5. Show the solution.
6. State and check your answer.​