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Mathematics 14 Online
OpenStudy (anonymous):

Mrs. Brown gives two tests to her class. 30% of the class passed both tests and 45% of the class passed the first test. What percent of those who passed the first test also passed the second test?

OpenStudy (anonymous):

no yur answer not because yu got to have a percent

OpenStudy (anonymous):

lets say there are 100 people in the class then 45 passed the first test, and 30 passed both

OpenStudy (inkyvoyd):

Draw a venn diagram.

OpenStudy (anonymous):

so is it gonna be 15%

OpenStudy (inkyvoyd):

no.

OpenStudy (anonymous):

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OpenStudy (anonymous):

so 30 put of the 45 who passed first test also passed second test. as a percent this is \[\frac{30}{45}=\frac{2}{3}=66\tfrac{2}{3}\%\]

OpenStudy (inkyvoyd):

Correcto, and I would give you a second medal.

OpenStudy (anonymous):

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