B. Just find the percentage to see if it is correct
[tex] \frac{24.5}{73} [/tex]
It equals about .3356, but multiply it by 100 to get its percentage which is about 34%. So yes it is correct.
C.
[tex] \frac{reading}{watching \: tv} \frac{3}{12} [/tex]
Simplified would be a ratio of
[tex] \frac{1}{4} [/tex]
So they would be incorrect
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