Bo and Erica are yoga instructors. Between the two of them, they teach 40 yoga classes each week. If Erica teaches 11 fewer than twice as many as Bo, how many classes does each instructor teach per week?
17 Bo; 23 Erica
14 Bo; 26 Erica
21 Bo; 19 Erica
19 Bo; 21 Erica

Question

Bo and Erica are yoga instructors. Between the two of them, they teach 40 yoga classes each week. If Erica teaches 11 fewer than twice as many as Bo, how many classes does each instructor teach per week?
17 Bo; 23 Erica
14 Bo; 26 Erica
21 Bo; 19 Erica
19 Bo; 21 Erica

anonymous · Answer

@deepeezy

campbell_st · Answer

let bo teach x classes

then erica teaches   2x - 11

so together 

x + 2x - 11 = 40

or 

3x - 11 = 40

solve for x. 

which will be the number Bo teaches... and then you can find Erica's number