Answer:
B. 50
Explanation:
Let x be the number of coupons sent to existing members.
The number of coupons sent to potential members is 4 times the number of coupons sent to existing members, or 4x.
The total number of coupons sent is the sum of the number of coupons sent to existing members and the number of coupons sent to potential members, or x + 4x = 5x.
The club sent out 250 coupons, so 5x = 250.
Dividing both sides of the equation by 5, you get x = 250 / 5 = 50.
Therefore, the club sent 50 coupons to existing members.