The number of the members of a club is more than 20 and less than 50. When 4 people sit at a table, other people exactly divided to 6-people groups (6 people sit at a table) or 7-people groups (7 people sit at a table). If the members are divided to 8-people groups, how many people will be left?  Choose the correct choice from the following choices.
A) 3  B) 4  C) 5  D) 6  E) 7
The number of members is 7k+4 = 6j+4   The only number in this range which satisfies this is 46.   46/8 = 5(8) + 6   The answer is 6.
<result>D</result>
The number of the members of a club is more than 20 and less than 50. When 4 people sit at a table, other people exactly divided to 6-people groups (6 people sit at a table) or 7-people groups (7 people sit at a table). If the members are divided to 8-people groups, how many people will be left?