Question

Agora chess club has 16 members and gains a new memeber every month. The key club has 4 members and gains 4 new members every month. How many months will it take for the clubs to have the same amount of members

Answer 1

Answer:

For chess club:

y1 = 16 + 1*x where y1=total number of members after x months  

For film club

y2 = 4 + 4*x where y2=total number of members after x months  

y1 = y2 at  

16 + x = 4 + 4x

3x = 12  

x = 4  

Therefore, after 4 months they the same number of members (equals 20 members, 16 + 1*4 or 4 + 4*4).