Para multiplicar tres o más números racionales en su expresión fraccionaria, se multiplican los numeradores entre sí y los denominadores entre sí? * Verdadero

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There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

What are the values of each variable in the diagram below?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.