A survey was conducted among 100 students of age groups 7-12 years and 13-18 years to find their favorite book genre. The students had to select any one genre out of detective, adventure, and biography. Out of the 50 students in the age group 7-12 years who participated in the survey, 23 liked adventure or biography. The total number of students of both age groups who liked detective books was 28.

Using a two-way table, compute the total number of students in the age group 13-18 years who liked adventure or biography.

23

27

49

51

Question

A survey was conducted among 100 students of age groups 7-12 years and 13-18 years to find their favorite book genre. The students had to select any one genre out of detective, adventure, and biography. Out of the 50 students in the age group 7-12 years who participated in the survey, 23 liked adventure or biography. The total number of students of both age groups who liked detective books was 28.

Using a two-way table, compute the total number of students in the age group 13-18 years who liked adventure or biography.

 23

 27

 49

 51

anonymous · Answer

@mathmate, Could you help me once again please?

mathmate · Answer

Hmm, have you done contingency tables before?

anonymous · Answer

I have but i completely frogot. :(

mathmate · Answer

It's a table that looks like this:
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mathmate · Answer

Can you fill in the remaining numbers, as far as you can?

mathmate · Answer

You may have to reread the question 2-3 times!

anonymous · Answer

I think correct me if im wrong...again thank you for the much needed help

mathmate · Answer

Are you able to take it from here?

anonymous · Answer

Probally not. Could i tag you to correct my work? or sse if i did okay please?

anonymous · Answer

|dw:1405621586981:dw|