1:30pm.
At 10:30. Mr Smith has traveled = 84 * 2 = 168 km. So at 10:30 am The distance between Mr Smith and Mr Lawrence is 522km.
Total speed of 2 people = 84 +90 = 174
The time the two met since Mr Lawrence's departure was = 522/174 = 3 hours. So they will meet at 1:30 pm
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