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mr. thomas is planning an activitu
thomas is planning an activity for his students in which they will
put together the pieces of some puzzles. first he will split the class
into / groups. then each group will get a box containing four mini-puzzi
to solve. two of the mini-puzzles have 15 pieces, while the other
two mini-puzzles have 20 pieces. once the groups have solved their
mini-puzzles, the class will put all of the mini-puzzles together to make
a big class puzzle. mr. thomas wants to know how many puzzle pieces
will be in the big class puzzle.