a*****g
发帖数: 1320 | 1 1> Your percent in the class varies directly to the number of hours you
study and inversely in the square of the number of hours of TV you watched
the week of the test. If a student studies for five hours and watches TV for
thirty hours the week of a test, their grade will be 66.66666%. How many
hours of TV was watched by a student that achieved a score of 75% with 10
hours of studying?
Thank you! | l**n
发帖数: 7272 | 2 percentage(Study,TV) = c*Study/TV^2
percentage(5, 30) = c*5/30^2 = 2/3
Q: percentage(10,TV)=0.75, what is TV?
是这样吗？ | a*****g
发帖数: 1320 | 3 谢谢！ I got it!
【在 l**n 的大作中提到】
: percentage(Study,TV) = c*Study/TV^2
: percentage(5, 30) = c*5/30^2 = 2/3
: Q: percentage(10,TV)=0.75, what is TV?
: 是这样吗？
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