Use the definition of conditional probability:
We know that 0.10 of students belong to both categories, and that 0.25 of students are seniors, so
Tina sold cookies at her clubs bake sale. She spent $18.50 on supplies. She sold her cookies for $0.75 each and made a profit of
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let's say the point dividing JK is say point P, so the JK segment gets split into two pieces, JP and PK