145 members. Part of the group helps clean. The other part of the group tutors. 20 more members clean than tutor after school.

Question

Equatioms must be made for this word problem! Thank You ?? 

Answer 1

Let C = number who clean

Let T = number who tutor

 

145 members  ==>  C + T = 145

 

20 more clean than tutor  ==>  C = T + 20 

 

These are the 2 equations.  Unfortunately they do not have positive integer solutions, which you can see by substituting the value for C from the 2nd equation in to the 1st equation 

 

(T+20) + T = 145

2T = 125

T = 62.5

 

So C = 62.5 + 20 = 82.5 

 

So 82.5 members clean and 62.5 tutor.  You can check that these numbers satisfy the constraints of the problem.  But it doesn't make sense to have half a member, unless someone spent half their time cleaning and half tutoring.