At the first baseball game of the season, every 6th person entering the ballpark received a coupon for a free hot dog. Every 10th person received a coupon for a free soft drink. What is the number of the first person to enter the ballpark that received a coupon for a free hot dog and a coupon for a free soft drink?
1. 10th
2. 16th
3. 30th
4. 60th
aaaaah someone help me!!!
(the numbers are the multiple choice)