The ball game begins at 2: 00 pm. it takes ying 30 minutes to get to the ballpark. at what time should ying leave home to get to the games 30minutes before it start?

Because it takes Ying 30 minutes to get to the ball park and the game starts at 2:00, he must leave at least 30 minutes before the game which would bring us to 1:30. But Ying wants to arrive at the game 30 minutes before it starts so he would have to leave another 30 minutes earlier. So 1:30pm - 30minutes brings us to 1:00. Ying would have to leave at 1:00pm.

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