Suzy and Jenny play tennis nearly every weekend. So far, Suzy has won 12 out of 20 matches. Suzy wants to improve her winning percentage to 75% by the end of the day.

How many more matches in a row will she need to win in order to achieve this goal?

Question

Suzy and Jenny play tennis nearly every weekend. So far, Suzy has won 12 out of 20 matches. Suzy wants to improve her winning percentage to 75% by the end of the day. 

How many more matches in a row will she need to win in order to achieve this goal?

stamp · Answer

Current win percentage (wins / games played) is 12/20, or 60%. So how many wins must she create to reach 75%? Remember, 75 per cent is 75 / 100.

(12 + x) / (20 + x) = 75 / 100

simpligic · Answer

I don't know :( I'm bad at math

simpligic · Answer

Would X=12?

stamp · Answer

Recognize that you are not "bad at math", nobody is bad at math. I've never touched a harp, but that does not mean I am bad at playing the harp - I have simply never studied the harp. And even once I picked up that harp, I would not say I am bad at it, I would say I have not studied it enough yet. That being said, this link looks helpful in helping you understand: https://www.cnm.edu/depts/tutoring/tlc/res/accuplacer/8_Math_550_Percent_Word_Problems__2_.pdf Best of luck, and remember math is 90% attitude.

simpligic · Answer

Okay thanks!