This question type is the slightly more complex version of the one shown here.
Both person start with the same total.
Each will use some of their total to make different quantities of 2 items.
The comparison between each of the 2 items and their respective remaining are given.
"Comparison models" will be needed to solve such questions.
Alan and Ben has equal amount of clay.
After Alan used his clay to make 10 bowls, he has 1.2kg of clay left.
After Ben used his clay to make 16 plates, he has 0.66kg of clay left.
Making 3 bowl uses the same amount of clay as 4 plates.
How much clay each boy have at first?

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