In grandmother Rachel’s jam factory, jam is made out of sugar and fruit. Grandmother Rachel mixed 300 kilograms of jam containing 30% of sugar
with 700 kilograms of jam containing 20% of sugar. What percentage of sugar does the new mixture contain?
There is not a common response, rather students tend to try multiple methods and generally become lost in the process.
It is sometimes difficult to find problems that create true dilemmas for students. This problem creates the dilemmas through conversation with an interviewer as the learner interprets the problems in a verbal exchange.