The number of the members of a club is more than 20 and less than 50. When 5 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? Options.
A) 3	B) 4	C) 5	D) 6	E) 7
The number of members is 7k+5 = 6j+5   The only number in this range which satisfies this is 47.   47/8 = 5(8) + 7   The answer is 7.
<result>E</result>
The number of the members of a club is more than 20 and less than 50. When 5 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?