contestada

A typesetter retyped 2/5 of a story one day, 3/10 of the story the next day and 4/15 the third day. What fraction of the story did the typesetter do in the three days?

Respuesta :

so find the common denominator of all:30
12/30, 9/30 and 8/30 then add them 29/30

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