billy and Ryan had a competition at the batting cage. billy hit 7 balls for every 4 balls Ryan hit. billy and Ryan hit a total of 99 balls. how many balls did each boy hit?

Respuesta :

Hagrid
We are to find the number of hits Billy and Ryan had in this game. We are then to find 2 thing or in other words there are 2 variables that we have to solve. As a rule we need to find 2 relationships. The 2 relationships or equations are: 

B + R = 99

[tex] \frac{B}{R} = \frac{7}{4} [/tex] or 4B - 7R = 0 
where B- Billy's hit and R - Ryan's hit. 

B= 63
R=36