Michael and Kathryn bowl together and their combined total score for one game was 425 points. Michael’s score was 70 less than twice Kathryn’s. What were their scores?

Which is a system of equations to model the problem if x represents Kathryn’s score and y represents Michael’s score?

x + y = 70
y = 2x – 425

x – y = 425
y = 2x – 70

x + y = 425
y = 2x – 70

x + y = 425
y = 2x + 70

Question

Michael and Kathryn bowl together and their combined total score for one game was 425 points. Michael’s score was 70 less than twice Kathryn’s. What were their scores? 

 

Which is a system of equations to model the problem if x represents Kathryn’s score and y represents Michael’s score?

 
   

x + y = 70
y = 2x – 425
 
   
x – y = 425
y = 2x – 70

 
   

x + y = 425
y = 2x – 70
 
   

x + y = 425
y = 2x + 70

kendricklamar2014 · Answer

I am guessing those are the answer choices. What is your answer @WildQueen

anonymous · Answer

ig it is B

kendricklamar2014 · Answer

B is actually wrong. This is why: Let x = Kathryn and y = Micheal
$$425 = x + y$$
$$y = 2x - 70$$

kendricklamar2014 · Answer

Just switch it around to get: $$x + y = 425$$
$$y = 2x – 70$$

kendricklamar2014 · Answer

Thats the answer ^_^