Problem Statement: Avinash is returning home from his friend's house and his dog is with him. It takes him 90 minutes to reach home. His dog runs twice as fast as Avinash walks. The moment Avinash and his dog leave his friend's house the dog reaches home before Avinash, and returns to his master. After meeting Avinash, the dog reaches home it reaches again to meet Avinash.
After how many minutes from the start of the trip does Avinash meet his dog for the second time ?
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