Josh earned $72 less than his sister who earned $93 more than her mom. If they earned a total of $504, how much did josh earn

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

Lorenzo ate 2/5 of his bag of almonds. his 4 friends ate equal shares of the remaining bag of almonds?

What is the solution of sqrt x+2-15=-3