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Rose was given a 15-item test. If she finished 8/10 of the questions and answered these correctly, how many items did she answer incorrectly?

Sagot :

[tex]15\cdot \frac{8}{10}=3\frac{8}{2}=\frac{24}{ 2}=12\\ \\15-12=3 \\ \\Answer : \ 3 \ items \ did \ she \ answer \ incorrectly[/tex]